gw-git-worktree-workflows

name	@gw-git-worktree-workflows
description	Master Git worktrees and gw-tools workflows for parallel development. Use this skill when creating worktrees, managing multiple branches simultaneously, navigating between worktrees, troubleshooting worktree issues, or setting up feature branch workflows. Triggers on tasks involving git worktree commands, branch isolation, parallel development, or gw CLI usage.
license	MIT
metadata	{"author":"mthines","version":"1.0.0"}

Git Worktree Workflows - Comprehensive Guide

This guide teaches you how to master Git worktrees using the gw CLI tool for optimized development workflows.

Table of Contents

1. Git Worktree Fundamentals
2. Creating and Managing Worktrees with gw
3. Navigating Between Worktrees
4. Listing and Inspecting Worktrees
5. Common Workflow Patterns
6. Cleanup and Maintenance
7. Troubleshooting Common Issues

---

1. Git Worktree Fundamentals

What are Git Worktrees?

Git worktrees allow you to have multiple working directories attached to a single repository. Instead of switching branches in your current directory, you can check out different branches in separate directories simultaneously.

Traditional branch switching:

# Your current work is interrupted
git checkout feature-a     # Work on feature A
git checkout feature-b     # Switch context, lose focus
git checkout main          # Switch again for hotfix

With worktrees:

# Each branch has its own directory
/repo.git/main/           # Main branch always ready
/repo.git/feature-a/      # Feature A development
/repo.git/feature-b/      # Feature B development in parallel
/repo.git/hotfix-123/     # Hotfix without interrupting features

Worktree vs Branch Switching vs Cloning

Approach	Pros	Cons
Branch Switching	Single directory, less disk space	Interrupts work, requires stashing, IDE reindexes
Worktrees	Parallel work, no interruption, shared Git history	Slightly more disk space for working files
Cloning	Complete isolation	Huge disk space, separate Git history, harder to sync

When Worktrees Shine

Worktrees are ideal for:

• Parallel feature development - Work on multiple features without context switching
• Hotfix workflows - Handle urgent bugs while continuing feature work
• Code reviews - Check out PR branches without disrupting your current work
• Testing - Test multiple versions or configurations simultaneously
• Long-running experiments - Keep experimental branches separate from main work
• Build artifacts - Separate build processes without conflicts

Worktree Limitations and Gotchas

What worktrees share:

• ✅ Git repository (.git directory)
• ✅ Commit history and objects
• ✅ Branches and tags
• ✅ Stashes
• ✅ Hooks and config

What worktrees DON'T share:

• ❌ Working directory files
• ❌ Untracked files
• ❌ node_modules (unless symlinked)
• ❌ Build artifacts
• ❌ .env files (unless copied)

Important limitations:

• You cannot check out the same branch in multiple worktrees simultaneously
• Each worktree needs its own dependencies installed (node_modules, vendor/, etc.)
• IDE workspace settings may need adjustment for each worktree
• Some Git UI tools have limited worktree support

---

2. Creating and Managing Worktrees with gw

Getting Started: Clone and Initialize

If you're setting up a new repository with gw, you can clone and initialize in one step:

# Clone a repository and automatically set up gw
$ gw init [e-mail]:user/repo.git

Cloning repository from [e-mail]:user/repo.git...
✓ Repository cloned to repo

Setting up gw_root branch...
✓ Created gw_root branch

Initializing gw configuration...
✓ Configuration created

Creating main worktree...
✓ Created main worktree

✓ Repository initialized successfully!

This automatically:

1. Clones the repository with --no-checkout
2. Creates a gw_root branch for the bare repository
3. Auto-detects the default branch (main, master, etc.)
4. Creates the gw configuration at .gw/config.json
5. Creates your first worktree for the default branch
6. Names the repository directory with .git suffix (bare repo convention)
7. Navigates you to the repository directory (with shell integration)

Clone with configuration:

# Clone with auto-copy files configured
$ gw init [e-mail]:user/repo.git \
          --auto-copy-files .env,secrets/ \
          --post-add "pnpm install"

# Clone into a custom directory
$ gw init [e-mail]:user/repo.git my-project

# Clone and configure interactively
$ gw init https://github.com/user/repo.git --interactive

For existing repositories:

If you already have a cloned repository, initialize gw from within it:

$ cd ~/projects/myapp
$ gw init

Auto-detected git root: /projects/myapp.git
✓ Configuration created successfully

The gw add Command

The gw add command is an enhanced version of git worktree add with automatic file copying and navigation:

# Basic usage - create worktree for existing branch
# Automatically navigates to the new worktree
gw add feature-auth

# Create worktree without automatic navigation
gw add feature-auth --no-cd

# Create worktree with new branch
gw add feature-payments -b feature-payments

# Create from a different branch instead of defaultBranch
gw add feature-payment-v2 --from develop

# Create child feature branch from parent feature branch
gw add feature-auth-social --from feature-auth

# Create from specific start point
gw add hotfix-security -b hotfix-security main

# Force creation (even if branch already checked out elsewhere)
gw add feature-test --force

Remote Fetch Behavior

When creating a new branch, gw add follows a remote-first approach to ensure your work starts from the latest code:

What's happening under the hood:

$ gw add feat/new-feature

Branch feat/new-feature doesn't exist, creating from main...
Fetching latest from remote to ensure fresh start point...
✓ Fetched successfully from remote
Creating from origin/main (latest from remote)

Creating worktree: feat/new-feature

The command:

1. Detects that feat/new-feature doesn't exist
2. Fetches the latest version of main from the remote (origin/main)
3. Creates your new branch from the fresh remote ref
4. Sets up tracking to origin/feat/new-feature for easy pushing

Why this matters:

• Prevents conflicts: Your branch starts from the latest remote code, not an outdated local branch
• Ensures fresh code: You're building on the most recent changes from your team
• Reduces merge pain: Fewer surprises when you eventually merge back to main

Offline/fallback behavior:

When remote fetch fails (network issues, offline work, no remote configured), behavior depends on the context:

# Without --from (default branch): Warns but allows local fallback
$ gw add feat/offline

Branch feat/offline doesn't exist, creating from main...
Fetching latest from remote to ensure fresh start point...

⚠ WARNING Could not fetch from remote

Falling back to local branch. The start point may not be up-to-date with remote.
This is acceptable for offline development or when remote is unavailable.

Creating from main (local branch)

Creating worktree: feat/offline

# With --from: Requires successful fetch, exits on failure
$ gw add feat/explicit --from develop

Branch feat/explicit doesn't exist, creating from develop...
Fetching latest from remote to ensure fresh start point...

ERROR Could not fetch from remote

Cannot create branch from develop because the remote fetch failed.
This would use a potentially outdated local branch.

Possible causes:
  • Network connectivity issues
  • Branch develop doesn't exist on remote
  • Authentication issues

Options:
  1. Check your network connection and try again
  2. Verify the branch exists: git ls-remote origin develop
  3. Use a different source branch: gw add feat/explicit --from <branch>
  4. Create without --from to use default branch: gw add feat/explicit

Key difference: --from requires freshness

• Without --from: Uses default branch with fallback to local (offline support)
• With --from: Requires successful remote fetch (ensures explicit source is fresh)

Navigating to Existing Worktrees

If you try to add a worktree that already exists, gw add will prompt you to navigate to it:

$ gw add feature-auth

ℹ Worktree feature-auth already exists at:
  /projects/myapp.git/feature-auth

Navigate to it? [Y/n]:
# Press Enter to navigate (default: Yes), or 'n' to cancel

This is convenient when you're not sure if you've already created a worktree for a branch. Requires shell integration to be installed (gw install-shell).

Auto-Copying Files

When creating worktrees with gw add, files configured in .gw/config.json are automatically copied:

{
  "root": "/Users/you/projects/myapp.git",
  "defaultBranch": "main",
  "autoCopyFiles": [".env", ".env.local", "secrets/", "components/ui/.vercel/"]
}

What gets copied:

• Environment files (.env, .env.local)
• Secrets and credentials
• Local configuration
• Cache directories (if needed)

What should NOT be auto-copied:

• node_modules (install fresh or symlink)
• Build artifacts (build fresh)
• Large binary files
• IDE settings (.vscode/, .idea/)

Example creating a worktree with auto-copy:

$ gw add feature-new-dashboard

Creating worktree feature-new-dashboard...
✓ Branch 'feature-new-dashboard' set up to track 'origin/feature-new-dashboard'
✓ Worktree created: /projects/myapp.git/feature-new-dashboard

Copying files from main...
✓ Copied: .env
✓ Copied: .env.local
✓ Copied: secrets/api-keys.json
✓ Copied: components/ui/.vercel/

Done! Navigate with: gw cd feature-new-dashboard

Note: The branch is configured to track its own remote branch (origin/feature-new-dashboard), not origin/main. This means git push will push to the correct branch without needing -u origin <branch>.

Network Failure Handling:

When creating worktrees, gw add has different behavior depending on whether you explicitly specify a source branch:

• With --from <branch>: Requires a successful fetch from the remote. If the fetch fails (network issues, branch doesn't exist on remote, authentication problems), the command exits with detailed error messages and suggestions. This ensures you're working with the latest code when you explicitly specify a source.
• Without --from (default branch): Warns about fetch failures but allows creation using the local branch. This provides a fallback for offline work or when no remote is configured.

Manual File Copying with gw sync

If you need to copy files later or from a different source:

# Copy all autoCopyFiles from config (if configured)
gw sync feature-auth

# Copy specific files from main to current worktree
gw sync feature-auth .env components/agents/.env

# Copy from a different worktree
gw sync --from staging feature-auth .env

Tracking vs Detached HEAD States

Tracking branches (recommended):

# Creates branch from origin/main, tracking its own remote branch
gw add feature-x

# Shows branch relationship
$ git status
On branch feature-x
Your branch is up to date with 'origin/feature-x'.

# Push works without specifying remote/branch
git push  # Pushes to origin/feature-x

Note: When gw add creates a new branch, it automatically configures upstream tracking to origin/<branch-name>, not to the branch it was created from. This ensures git push works correctly.

Detached HEAD (for temporary work):

# Check out specific commit
gw add temp-test --detach v1.2.3

# No branch, just a commit
$ git status
HEAD detached at v1.2.3

Use tracking branches for features you'll push. Use detached HEAD for temporary testing or inspecting old commits.

Branch Creation Strategies

Feature branches:

# Branch from main
gw add feature-name -b feature-name main

# Branch from develop
gw add feature-name -b feature-name develop

Hotfix branches:

# Branch from production tag
gw add hotfix-security -b hotfix-security v1.2.3

# Branch from main for immediate fix
gw add hotfix-critical -b hotfix-critical main

Release branches:

# Create release candidate from develop
gw add release-v2.0 -b release-v2.0 develop

---

3. Navigating Between Worktrees

Using gw cd for Quick Navigation

The gw cd command provides smart navigation to worktrees:

# Full worktree name
gw cd feature-authentication

# Partial match (first match wins)
gw cd feat    # Matches feature-authentication if it's first

# Smart matching by branch name
gw cd auth    # Finds worktree with 'auth' in name

Using gw checkout (or gw co) for Smart Branch Checkout

The gw checkout command is a smart wrapper around git checkout that understands worktrees:

# Checkout a branch - navigates if already checked out elsewhere
gw checkout main
# or use the alias
gw co main

# If branch is checked out in another worktree:
# Output: Branch main is checked out in another worktree:
#   /projects/myapp.git/main
# Navigating there...

# If branch exists on remote but not locally, prompts to create worktree:
gw checkout feature-new
# Output: Branch feature-new exists on remote but not locally.
# Create a new worktree for it? [Y/n]:

When to use gw checkout vs gw cd:

• Use gw checkout <branch> when you think of branches (like git checkout)
• Use gw cd <worktree> when you think of directory names
• Both support partial matching and navigate to existing worktrees
• gw checkout additionally handles remote branches and provides worktree-aware error messages

Why not just use git checkout?

With worktrees, git checkout main will fail if main is checked out in another worktree:

$ git checkout main
fatal: 'main' is already checked out at '/projects/myapp.git/main'

With gw checkout, this just takes you there instead of showing an error. It reduces friction when transitioning from traditional Git workflows to worktree-based workflows.

Shell Integration

After installing gw via npm, a shell function is automatically installed:

# This is actually a shell function, not the binary
gw cd feature-auth

# The shell function:
# 1. Calls the actual gw binary
# 2. Gets the worktree path
# 3. Changes directory in your current shell

Checking if shell integration is installed:

# Test it
gw cd main
pwd  # Should show path to main worktree

# If not working, reinstall shell integration
gw install-shell

Shell integration features:

• Real-time streaming output - Commands like gw add now stream output as it's generated (no buffering)
• Auto-navigation - Automatically navigate to new worktrees after gw add completes
• Smart cleanup - Auto-navigate to repo root when removing the current worktree with gw remove

For development aliases:

If you're developing gw-tools locally, you can install shell integration for a development command:

# Install for development (replace with your actual path)
gw install-shell --name gw-dev \
  --command "deno run --allow-all ~/path/to/gw-tools/packages/gw-tool/src/main.ts"

# Then use it with full integration
gw-dev add feat-branch  # Output streams in real-time!
gw-dev cd feat-branch   # Navigation works!

IDE Workspace Management

VS Code:

Open each worktree as a separate window:

gw cd feature-a
code .

Or use multi-root workspaces:

// myapp.code-workspace
{
  "folders": [
    {" "name": "Main",
      "path": "/projects/myapp.git/main"
    },
    {
      "name": "Feature A",
      "path": "/projects/myapp.git/feature-a"
    },
    {
      "name": "Feature B",
      "path": "/projects/myapp.git/feature-b"
    }
  ]
}

JetBrains IDEs (WebStorm, IntelliJ, etc.):

Each worktree can be its own project:

gw cd feature-a
idea .

Or attach multiple source roots to a single project.

---

4. Listing and Inspecting Worktrees

The gw list Command

List all worktrees in your repository:

$ gw list

/projects/myapp.git/main          abc123f [main]
/projects/myapp.git/feature-auth  def456a [feature-auth]
/projects/myapp.git/hotfix-bug    ghi789b [hotfix-bug] (detached)
/projects/myapp.git/old-feature   jkl012c [feature-old] (locked)

Understanding Worktree States

Normal worktree:

/projects/myapp.git/feature-auth  def456a [feature-auth]

• Path, commit hash, branch name

Detached HEAD:

/projects/myapp.git/temp  xyz789d (detached)

• No branch, pointing to specific commit

Locked worktree:

/projects/myapp.git/protected  abc123f [protected] (locked)

• Cannot be removed with gw remove unless unlocked first

Prunable worktree:

/old/path/feature  abc123f [feature] (prunable)

• Directory was moved or deleted, reference still exists

Finding Worktrees by Branch Name

# List all worktrees
gw list

# Filter with grep
gw list | grep feature

# Find specific branch
gw list | grep "\[main\]"

Identifying the Main Worktree

The first worktree listed is the main worktree (the original repository):

$ gw list
/projects/myapp.git/main  abc123f [main]  ← Main worktree
/projects/myapp.git/feature  def456a [feature]

The main worktree:

• Contains the actual .git directory
• Cannot be removed
• Is the parent of all other worktrees

---

5. Common Workflow Patterns

Feature Branch Development

Scenario: Starting a new feature without interrupting current work

# Currently working in main
pwd  # /projects/myapp.git/main

# Create feature worktree
gw add feature-user-profiles -b feature-user-profiles

# Navigate to new worktree
gw cd feature-user-profiles

# Work on feature
npm install
npm run dev

# Meanwhile, main worktree is untouched

Benefit: Your main branch stays clean and ready for hotfixes or other work.

Keeping Feature Branches Up to Date

Scenario: Updating your feature branch with latest changes from main

# Working in feature worktree
gw cd feature-user-profiles

# Update with latest changes from main (uses configured strategy)
gw update

# Or update from a different branch
gw update --from develop

# Force merge strategy (overrides config)
gw update --merge

# Force rebase strategy (overrides config)
gw update --rebase

# Preview what would happen
gw update --dry-run

Why use gw update instead of git pull?

When working in a worktree, you cannot simply checkout main to pull the latest changes because main is typically checked out in another worktree. The gw update command solves this by:

1. Fetching the latest version of main (or specified branch) from remote
2. Updating your current branch using either merge or rebase strategy
3. Handling conflicts and providing clear guidance

Update strategies:

• Merge (default): Creates merge commits, preserves complete history
• Rebase: Replays commits for linear history, cleaner but rewrites history

Configure default strategy in .gw/config.json or override per-command with --merge/--rebase flags.

Safety features:

• Blocks if you have uncommitted changes (use --force to override)
• Blocks if you're in a detached HEAD state
• Provides clear guidance when merge/rebase conflicts occur

Network Failure Handling:

Similar to gw add, the gw update command has different behavior for network failures:

• With --from <branch>: Requires a successful fetch from the remote. If the fetch fails, the command exits with detailed error messages and troubleshooting steps. This prevents updating from a potentially outdated local branch when you've explicitly specified a source.
• Without --from (default branch): Warns about fetch failures but allows the update using the local branch. This provides a fallback for offline work.

Example workflow:

# Start working on feature
gw cd feature-dashboard

# Work for a few days...
git add .
git commit -m "feat: add dashboard widgets"

# Meanwhile, main has new changes
# Update your feature branch with latest main
gw update

# If there's a conflict, you'll get clear guidance:
# For merge conflicts:
#   1. Edit conflicted files
#   2. git add <resolved-files>
#   3. git commit
# For rebase conflicts:
#   1. Edit conflicted files
#   2. git add <resolved-files>
#   3. git rebase --continue

# Continue working
git add .
git commit -m "feat: integrate new API endpoints from main"

Benefit: Keep your feature branch up to date without switching worktrees or manually managing fetch/merge operations.

Hotfix Workflows While Continuing Feature Work

Scenario: Critical bug in production while working on a feature

# Currently working on feature-dashboard
gw cd feature-dashboard
# In the middle of uncommitted changes...

# Create hotfix worktree (doesn't interrupt feature work)
gw add hotfix-login-bug -b hotfix-login-bug main

# Navigate to hotfix
gw cd hotfix-login-bug

# Fix the bug
vim src/auth/login.js
git add .
git commit -m "fix: resolve login timeout issue"
git push origin hotfix-login-bug

# Go back to feature work
gw cd feature-dashboard
# All your uncommitted changes are still there!

Benefit: No need to stash, commit WIP, or lose context.

Hierarchical Feature Development

Scenario: Building related features where one depends on another

Sometimes you need to create a child feature branch that builds on top of a parent feature branch that hasn't been merged yet. The --from option makes this workflow seamless:

# Create parent feature from main
gw add feature-auth

# Work on authentication foundation
gw cd feature-auth
# ... implement basic auth ...
git add .
git commit -m "feat: add basic authentication"

# Create child feature from the auth branch (not main)
gw add feature-auth-social --from feature-auth

# Navigate to child feature
gw cd feature-auth-social

# This branch now has all the auth foundation from feature-auth
# Build social login on top of basic auth
# ... implement OAuth integration ...
git add .
git commit -m "feat: add social login with OAuth"

Benefits:

• Child feature automatically includes all parent feature commits
• Can develop related features in parallel without waiting for merges
• Tracks origin/feature-auth-social for push (not origin/feature-auth)
• Clear dependency relationship between features
• Ensures latest code from the source branch by requiring successful remote fetch

Common patterns:

# Experimental variations of a feature
gw add feature-dashboard-v2 --from feature-dashboard

# Staged rollouts with different implementations
gw add feature-api-graphql --from feature-api
gw add feature-api-rest --from feature-api

# Environment-specific feature branches
gw add feature-payment-staging --from develop
gw add feature-payment-prod --from main

When to merge:

1. Merge parent feature first: feature-auth → main
2. Rebase or merge child onto updated main
3. Merge child feature: feature-auth-social → main

Code Review Workflows

Scenario: Reviewing a teammate's PR without disrupting your work

# Create reviewer worktree
gw add review-pr-123 -b pr-123 origin/pr-123

# Navigate and review
gw cd review-pr-123
npm install
npm test
npm run dev  # Test the changes

# Run code reviews, add comments
git checkout -b pr-123-suggestions
# Make suggestions...

# Return to your work
gw cd feature-dashboard

# Clean up when done
gw remove review-pr-123

Benefit: Review code in a real environment without affecting your workspace.

Testing Multiple Versions Simultaneously

Scenario: Testing a feature across Node.js 18 and Node.js 20

# Create worktrees for each test environment
gw add test-node18 -b feature-api
gw add test-node20 -b feature-api --force

# Set up Node 18 environment
gw cd test-node18
nvm use 18
npm install
npm test

# Set up Node 20 environment (in another terminal)
gw cd test-node20
nvm use 20
npm install
npm test

# Compare results

Benefit: Run tests in parallel, catch version-specific issues early.

Long-Running Experiment Branches

Scenario: Trying a risky refactor without committing to it

# Create experiment worktree
gw add experiment-new-architecture -b experiment/new-arch

# Work on experiment over days/weeks
gw cd experiment-new-architecture
# Radical changes...

# Keep working on main features in other worktrees
gw cd feature-payments
# Normal work continues...

# Later: merge experiment if successful, or delete if not
gw cd experiment-new-architecture
git push origin experiment/new-arch  # Share with team

# Or abandon
gw remove experiment-new-architecture

Benefit: Experiment freely without risking main development.

---

6. Cleanup and Maintenance

Removing Worktrees

Safe removal:

# Remove worktree (commits must be pushed or merged)
gw remove feature-completed

# Force removal (even with unpushed commits)
gw remove feature-abandoned --force

Protected branches (cannot be removed):

• Default branch (typically main, configured in .gw/config.json)
• gw_root branch (bare repository root)
• Bare repository worktree

What happens:

• Working directory is deleted
• Worktree reference removed from Git
• Branch remains in repository (can still be checked out elsewhere)

Cleaning Up Stale Worktrees

Remove safe worktrees:

# Preview all safe worktrees (default behavior)
gw clean --dry-run

# Remove all safe worktrees regardless of age
gw clean

# Only remove worktrees older than configured threshold
gw clean --use-autoclean-threshold

# Preview old worktrees with threshold check
gw clean --use-autoclean-threshold --dry-run

# Force removal (skips safety checks - dangerous!)
gw clean --force

How it works:

• Default mode: Finds ALL safe worktrees (no age check)
• With --use-autoclean-threshold: Only finds worktrees older than configured threshold (default: 7 days)
• By default, only removes worktrees with:
  • NO uncommitted changes
  • NO unpushed commits
• Always prompts for confirmation before deletion
• Protected worktrees (never removed):
  • Bare repository worktree
  • Default branch (configured in .gw/config.json, typically main)
  • gw_root branch (bare repository root)

Cleanup strategies:

Command	When to Use
gw clean	Clean up all finished work regardless of age
gw clean --use-autoclean-threshold	Regular maintenance (only old worktrees)
gw prune --clean	Aggressive cleanup with default branch protection

Configure the threshold:

# Set to 14 days during initialization
gw init --clean-threshold 14

# Or manually edit .gw/config.json
{
  "cleanThreshold": 14
}

Example workflow (default mode):

# Check what would be cleaned (all safe worktrees)
$ gw clean --dry-run
INFO: Checking for safe worktrees to clean...

Worktrees to remove:
  ✗ completed-feature-1 (2 days old)
  ✗ completed-feature-2 (14 days old)

Skipped worktrees:
  ⚠ active-feature - has uncommitted changes

# Review and clean
$ gw clean
Remove 2 worktree(s)?
Type 'yes' to confirm: yes

Removing completed-feature-1...
  ✓ Removed

Removing completed-feature-2...
  ✓ Removed

SUCCESS: Removed 2 worktree(s)

Example workflow (threshold mode):

# Check what would be cleaned (only old worktrees)
$ gw clean --use-autoclean-threshold --dry-run
INFO: Checking for worktrees older than 7 days...

Worktrees to remove:
  ✗ old-feature-1 (14 days old)
  ✗ old-feature-2 (10 days old)

Skipped worktrees:
  ⚠ recent-feature - has uncommitted changes

# Review and clean
$ gw clean --use-autoclean-threshold
Remove 2 worktree(s)?
Type 'yes' to confirm: yes

SUCCESS: Removed 2 worktree(s)

Cleanup Strategies: gw clean vs gw prune --clean

The gw tool provides two complementary cleanup commands for different scenarios:

Age-based Cleanup: gw clean

• Removes worktrees older than configured threshold (default: 7 days)
• Good for regular maintenance
• Respects safety checks (no uncommitted changes, no unpushed commits)
• Configurable via .gw/config.json

# Regular maintenance (weekly)
gw clean --dry-run  # Preview
gw clean            # Remove old worktrees

Complete Cleanup: gw prune --clean

• Removes ALL clean worktrees (regardless of age)
• First runs git worktree prune to clean up administrative data
• Protects default branch and current worktree
• Good for aggressive cleanup before archiving or when disk space is critical

# Aggressive cleanup (before vacation, archiving)
gw prune --clean --dry-run  # Preview
gw prune --clean            # Remove all clean worktrees

Comparison:

Feature	gw clean	gw prune --clean
Age-based	Yes (configurable)	No (removes all clean)
Safety checks	Yes	Yes
Protects default branch	No	Yes
Runs git worktree prune	No	Yes
Use case	Regular maintenance	Aggressive cleanup

When to use which:

Use gw clean:

• Weekly/monthly maintenance to remove stale worktrees
• When you want to keep recent worktrees but clean up old ones
• As part of automated cleanup routines

Use gw prune --clean:

• Before archiving a project or taking a break
• When you need to free up disk space quickly
• To reset to a minimal worktree setup (just main branch + current work)
• After completing a major milestone or release

Example workflow:

# Regular maintenance (weekly)
gw clean --dry-run  # Preview old worktrees
gw clean            # Remove if ok

# Major cleanup (quarterly or before breaks)
gw prune --clean --dry-run  # Preview all clean worktrees
gw prune --clean            # Remove all clean worktrees

Pruning Stale Worktree References

Scenario: You manually deleted a worktree directory

# This shows stale references
$ gw list
/projects/myapp.git/main      abc123f [main]
/projects/myapp.git/deleted   def456a [feature] (prunable)

# Clean up stale references
gw prune

# Confirm
$ gw list
/projects/myapp.git/main  abc123f [main]

Locking/Unlocking Worktrees

Protect a worktree from accidental removal:

# Lock production deployment worktree
gw lock production-deploy

# Try to remove (fails)
$ gw remove production-deploy
fatal: 'production-deploy' is locked; use 'git worktree unlock' to remove

# Unlock when ready
gw unlock production-deploy
gw remove production-deploy

Disk Space Management Strategies

Check worktree sizes:

du -sh /projects/myapp.git/*
# 150M main
# 145M feature-auth
# 892M feature-payments  # Lots of node_modules!

Optimization strategies:

1. Share node_modules with symlinks (advanced, use with caution):

# In feature worktree
rm -rf node_modules
ln -s ../main/node_modules node_modules

2. Use pnpm (shares packages automatically):

pnpm install  # Shares packages across worktrees

3. Remove old worktrees regularly:

# List and remove old feature worktrees
gw list | grep feature-old
gw remove feature-old-1 feature-old-2

4. Archive instead of keeping:

# Push branch, remove worktree
git push origin feature-complete
gw remove feature-complete
# Can recreate later if needed

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7. Troubleshooting Common Issues

"Worktree already exists" Errors

Problem:

$ gw add feature-auth
fatal: 'feature-auth' already exists

Solution:

# List existing worktrees
gw list

# Remove old worktree first
gw remove feature-auth

# Or use a different name
gw add feature-auth-v2

Git Ref Conflicts (Branch Name Hierarchy)

Problem:

$ gw add test
Cannot create branch test because it conflicts with existing branch test/foo

Git doesn't allow both refs/heads/test and refs/heads/test/foo

Git prevents creating branches with hierarchical naming conflicts (e.g., both test and test/foo) because they would require the same path to be both a file and a directory in .git/refs/heads/.

Solution:

# Option 1: Use a different name
gw add test-new -b test-new

# Option 2: Delete the conflicting branch
git branch -d test/foo
gw add test

# Option 3: Use the existing conflicting branch
gw add test/foo

Prevention: Use consistent naming conventions. Good: feature/auth, feature/checkout. Bad: mixing feature and feature/new.

Locked Worktree Recovery

Problem:

$ gw remove feature-x
fatal: 'feature-x' is locked

Solution:

# Unlock the worktree
gw unlock feature-x

# Now remove
gw remove feature-x

Corrupted Worktree State

Problem:

$ gw cd feature-x
fatal: 'feature-x' does not appear to be a git repository

Solution:

# Repair worktree administrative files
gw repair

# If that doesn't work, remove and recreate
gw remove feature-x --force
gw add feature-x -b feature-x origin/feature-x

Permission Issues

Problem:

$ gw add feature-y
fatal: could not create work tree dir 'feature-y': Permission denied

Solution:

# Check parent directory permissions
ls -la /projects/myapp.git/

# Fix permissions
chmod 755 /projects/myapp.git/

# Or use sudo (not recommended)
sudo gw add feature-y

Git Administrative File Repair

Problem:

$ git status
error: bad signature 0x00000000
fatal: index file corrupt

Solution:

# In affected worktree
rm .git/index
git reset

# Or use repair command
gw repair

# Rebuild index
git add .

Branch Checkout Conflicts

Problem:

$ gw add feature-x
fatal: 'feature-x' is already checked out at '/projects/myapp.git/other-worktree'

Solution:

# Option 1: Use the existing worktree
gw cd feature-x  # Goes to /projects/myapp.git/other-worktree

# Option 2: Create new branch
gw add feature-x-new -b feature-x-new feature-x

# Option 3: Force checkout (only if you know what you're doing)
gw add feature-x-copy -b feature-x-copy --force

Shell Integration Issues

Problem: gw cd doesn't navigate or shows parse errors

# Zsh example error:
/Users/name/.gw/shell/integration-gw-dev.zsh:2: defining function based on alias `gw-dev'
/Users/name/.gw/shell/integration-gw-dev.zsh:2: parse error near `()'

Solution:

# For regular gw installation
gw install-shell

# For development aliases, remove any existing alias first
# Then install with --command flag
gw install-shell --name gw-dev \
  --command "deno run --allow-all ~/path/to/gw-tools/packages/gw-tool/src/main.ts"

# Reload your shell
source ~/.zshrc  # or ~/.bashrc

Common causes:

• Conflicting alias and function with same name (remove alias from .zshrc)
• Old integration script format (reinstall fixes this)
• Shell not supported (only zsh, bash, fish)

Cleaning Up After Errors

Problem: Failed worktree creation left partial state

Solution:

# Remove partial worktree
rm -rf /projects/myapp.git/failed-worktree

# Clean up Git references
gw prune

# Verify clean state
gw list

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Summary

You now understand:

• ✅ Git worktree fundamentals and when to use them
• ✅ Creating and managing worktrees with gw add
• ✅ Quick navigation with gw cd
• ✅ Common workflow patterns for features, hotfixes, and reviews
• ✅ Maintenance and cleanup strategies
• ✅ Troubleshooting common issues

Next Steps

1. Try creating your first worktree with gw add
2. Set up auto-copy configuration (see config-management skill)
3. Explore autonomous workflows (see autonomous-workflow skill)

Additional Resources

• Getting Started Example
• Parallel Development Example
• Troubleshooting Guide
• gw CLI Documentation

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Part of the gw-tools skills collection