github-pr-workflow

name	github-pr-workflow
description	Full pull request lifecycle — create branches, commit changes, open PRs, monitor CI status, auto-fix failures, and merge. Works with gh CLI or falls back to git + GitHub REST API via curl.
version	1.1.0
author	Hermes Agent
license	MIT
metadata	{"hermes":{"tags":["GitHub","Pull-Requests","CI/CD","Git","Automation","Merge"],"related_skills":["github-auth","github-code-review"]}}

GitHub Pull Request Workflow

Complete guide for managing the PR lifecycle. Each section shows the gh way first, then the git + curl fallback for machines without gh.

Prerequisites

• Authenticated with GitHub (see github-auth skill)
• Inside a git repository with a GitHub remote

Quick Auth Detection

# Determine which method to use throughout this workflow
if command -v gh &>/dev/null && gh auth status &>/dev/null; then
  AUTH="gh"
else
  AUTH="git"
  # Ensure we have a token for API calls
  if [ -z "$GITHUB_TOKEN" ]; then
    if [ -f ~/.hermes/.env ] && grep -q "^GITHUB_TOKEN=" ~/.hermes/.env; then
      GITHUB_TOKEN=$(grep "^GITHUB_TOKEN=" ~/.hermes/.env | head -1 | cut -d= -f2 | tr -d '\n\r')
    elif grep -q "github.com" ~/.git-credentials 2>/dev/null; then
      GITHUB_TOKEN=$(grep "github.com" ~/.git-credentials 2>/dev/null | head -1 | sed 's|https://[^:]*:\([^@]*\)@.*|\1|')
    fi
  fi
fi
echo "Using: $AUTH"

Extracting Owner/Repo from the Git Remote

Many curl commands need owner/repo. Extract it from the git remote:

# Works for both HTTPS and SSH remote URLs
REMOTE_URL=$(git remote get-url origin)
OWNER_REPO=$(echo "$REMOTE_URL" | sed -E 's|.*github\.com[:/]||; s|\.git$||')
OWNER=$(echo "$OWNER_REPO" | cut -d/ -f1)
REPO=$(echo "$OWNER_REPO" | cut -d/ -f2)
echo "Owner: $OWNER, Repo: $REPO"

---

1. Branch Creation

This part is pure git — identical either way:

# Make sure you're up to date
git fetch origin
git checkout main && git pull origin main

# Create and switch to a new branch
git checkout -b feat/add-user-authentication

Branch naming conventions:

• feat/description — new features
• fix/description — bug fixes
• refactor/description — code restructuring
• docs/description — documentation
• ci/description — CI/CD changes

2. Making Commits

Use the agent's file tools (write_file, patch) to make changes, then commit:

# Stage specific files
git add src/auth.py src/models/user.py tests/test_auth.py

# Commit with a conventional commit message
git commit -m "feat: add JWT-based user authentication

- Add login/register endpoints
- Add User model with password hashing
- Add auth middleware for protected routes
- Add unit tests for auth flow"

Commit message format (Conventional Commits):

type(scope): short description

Longer explanation if needed. Wrap at 72 characters.

Types: feat, fix, refactor, docs, test, ci, chore, perf

3. Pushing and Creating a PR

Push the Branch (same either way)

git push -u origin HEAD

Create the PR

With gh:

gh pr create \
  --title "feat: add JWT-based user authentication" \
  --body "## Summary
- Adds login and register API endpoints
- JWT token generation and validation

## Test Plan
- [ ] Unit tests pass

Closes #42"

Options: --draft, --reviewer user1,user2, --label "enhancement", --base develop

With git + curl:

BRANCH=$(git branch --show-current)

curl -s -X POST \
  -H "Authorization: token $GITHUB_TOKEN" \
  -H "Accept: application/vnd.github.v3+json" \
  https://api.github.com/repos/$OWNER/$REPO/pulls \
  -d "{
    \"title\": \"feat: add JWT-based user authentication\",
    \"body\": \"## Summary\nAdds login and register API endpoints.\n\nCloses #42\",
    \"head\": \"$BRANCH\",
    \"base\": \"main\"
  }"

The response JSON includes the PR number — save it for later commands.

To create as a draft, add "draft": true to the JSON body.

PR Permission and Ambiguity Discipline

Before creating a PR, respect the most specific recent user instruction about PR timing. If the user explicitly said not to create a PR yet, do not treat a later vague phrase such as “move forward,” “continue,” or “when ready proceed” as authorization to open the PR unless it clearly mentions PR creation or the broader context makes that unambiguous. In that case, push the branch, report it is ready, and ask whether to open the PR; or provide the manual PR URL. This matters especially when the user said a major correction/change must happen before PR creation.

PR Creation Troubleshooting

If gh pr create fails with No commits between main and <branch>:

1. Do not assume GitHub is broken. Verify the relationship first:

   git fetch origin
   git merge-base origin/main HEAD
   git rev-list --left-right --count origin/main...HEAD
   git diff --stat origin/main...HEAD
   

2. If the branch is already an ancestor of main or has 0 commits ahead, there is no diff to PR. Report that clearly.
3. If the user still needs a PR for follow-up work, create a fresh branch from current main, make the required changes there, commit, push, and create the PR from that new branch.
4. If an interface/security gate blocks gh pr create with BLOCKED: User denied. Do NOT retry., do not retry via gh or bypass with curl. Provide the manual GitHub PR URL instead:

   echo "https://github.com/$OWNER/$REPO/pull/new/$BRANCH"
   

When verification is partially blocked by pre-existing unrelated failures, still run the most relevant checks. Record exactly what passed, what failed, and why the failure appears unrelated to the current diff.

4. Monitoring CI Status

Check CI Status

With gh:

# One-shot check
gh pr checks

# Watch until all checks finish (polls every 10s)
gh pr checks --watch

With git + curl:

# Get the latest commit SHA on the current branch
SHA=$(git rev-parse HEAD)

# Query the combined status
curl -s \
  -H "Authorization: token $GITHUB_TOKEN" \
  https://api.github.com/repos/$OWNER/$REPO/commits/$SHA/status \
  | python3 -c "
import sys, json
data = json.load(sys.stdin)
print(f\"Overall: {data['state']}\")
for s in data.get('statuses', []):
    print(f\"  {s['context']}: {s['state']} - {s.get('description', '')}\")"

# Also check GitHub Actions check runs (separate endpoint)
curl -s \
  -H "Authorization: token $GITHUB_TOKEN" \
  https://api.github.com/repos/$OWNER/$REPO/commits/$SHA/check-runs \
  | python3 -c "
import sys, json
data = json.load(sys.stdin)
for cr in data.get('check_runs', []):
    print(f\"  {cr['name']}: {cr['status']} / {cr['conclusion'] or 'pending'}\")"

Poll Until Complete (git + curl)

# Simple polling loop — check every 30 seconds, up to 10 minutes
SHA=$(git rev-parse HEAD)
for i in $(seq 1 20); do
  STATUS=$(curl -s \
    -H "Authorization: token $GITHUB_TOKEN" \
    https://api.github.com/repos/$OWNER/$REPO/commits/$SHA/status \
    | python3 -c "import sys,json; print(json.load(sys.stdin)['state'])")
  echo "Check $i: $STATUS"
  if [ "$STATUS" = "success" ] || [ "$STATUS" = "failure" ] || [ "$STATUS" = "error" ]; then
    break
  fi
  sleep 30
done

5. Auto-Fixing CI Failures

When CI fails, diagnose and fix. This loop works with either auth method.

Step 1: Get Failure Details

With gh:

# List recent workflow runs on this branch
gh run list --branch $(git branch --show-current) --limit 5

# View failed logs
gh run view <RUN_ID> --log-failed

With git + curl:

BRANCH=$(git branch --show-current)

# List workflow runs on this branch
curl -s \
  -H "Authorization: token $GITHUB_TOKEN" \
  "https://api.github.com/repos/$OWNER/$REPO/actions/runs?branch=$BRANCH&per_page=5" \
  | python3 -c "
import sys, json
runs = json.load(sys.stdin)['workflow_runs']
for r in runs:
    print(f\"Run {r['id']}: {r['name']} - {r['conclusion'] or r['status']}\")"

# Get failed job logs (download as zip, extract, read)
RUN_ID=<run_id>
curl -s -L \
  -H "Authorization: token $GITHUB_TOKEN" \
  https://api.github.com/repos/$OWNER/$REPO/actions/runs/$RUN_ID/logs \
  -o /tmp/ci-logs.zip
cd /tmp && unzip -o ci-logs.zip -d ci-logs && cat ci-logs/*.txt

Step 2: Fix and Push

After identifying the issue, use file tools (patch, write_file) to fix it:

git add <fixed_files>
git commit -m "fix: resolve CI failure in <check_name>"
git push

Step 3: Verify

Re-check CI status using the commands from Section 4 above.

Auto-Fix Loop Pattern

When asked to auto-fix CI, follow this loop:

1. Check CI status → identify failures
2. Read failure logs → understand the error
3. Use read_file + patch/write_file → fix the code
4. git add . && git commit -m "fix: ..." && git push
5. Wait for CI → re-check status
6. Repeat if still failing (up to 3 attempts, then ask the user)

6. Merging

With gh:

# Squash merge + delete branch (cleanest for feature branches)
gh pr merge --squash --delete-branch

# Enable auto-merge (merges when all checks pass)
gh pr merge --auto --squash --delete-branch

With git + curl:

PR_NUMBER=<number>

# Merge the PR via API (squash)
curl -s -X PUT \
  -H "Authorization: token $GITHUB_TOKEN" \
  https://api.github.com/repos/$OWNER/$REPO/pulls/$PR_NUMBER/merge \
  -d "{
    \"merge_method\": \"squash\",
    \"commit_title\": \"feat: add user authentication (#$PR_NUMBER)\"
  }"

# Delete the remote branch after merge
BRANCH=$(git branch --show-current)
git push origin --delete $BRANCH

# Switch back to main locally
git checkout main && git pull origin main
git branch -d $BRANCH

Merge methods: "merge" (merge commit), "squash", "rebase"

Enable Auto-Merge (curl)

# Auto-merge requires the repo to have it enabled in settings.
# This uses the GraphQL API since REST doesn't support auto-merge.
PR_NODE_ID=$(curl -s \
  -H "Authorization: token $GITHUB_TOKEN" \
  https://api.github.com/repos/$OWNER/$REPO/pulls/$PR_NUMBER \
  | python3 -c "import sys,json; print(json.load(sys.stdin)['node_id'])")

curl -s -X POST \
  -H "Authorization: token $GITHUB_TOKEN" \
  https://api.github.com/graphql \
  -d "{\"query\": \"mutation { enablePullRequestAutoMerge(input: {pullRequestId: \\\"$PR_NODE_ID\\\", mergeMethod: SQUASH}) { clientMutationId } }\"}"

7. Complete Workflow Example

# 1. Start from clean main
git checkout main && git pull origin main

# 2. Branch
git checkout -b fix/login-redirect-bug

# 3. (Agent makes code changes with file tools)

# 4. Commit
git add src/auth/login.py tests/test_login.py
git commit -m "fix: correct redirect URL after login

Preserves the ?next= parameter instead of always redirecting to /dashboard."

# 5. Push
git push -u origin HEAD

# 6. Create PR (picks gh or curl based on what's available)
# ... (see Section 3)

# 7. Monitor CI (see Section 4)

# 8. Merge when green (see Section 6)

Useful PR Commands Reference

Action	gh	git + curl
List my PRs	gh pr list --author @me	curl -s -H "Authorization: token $GITHUB_TOKEN" "https://api.github.com/repos/$OWNER/$REPO/pulls?state=open"
View PR diff	gh pr diff	git diff main...HEAD (local) or curl -H "Accept: application/vnd.github.diff" ...
Add comment	gh pr comment N --body "..."	curl -X POST .../issues/N/comments -d '{"body":"..."}'
Request review	gh pr edit N --add-reviewer user	curl -X POST .../pulls/N/requested_reviewers -d '{"reviewers":["user"]}'
Close PR	gh pr close N	curl -X PATCH .../pulls/N -d '{"state":"closed"}'
Check out someone's PR	gh pr checkout N	git fetch origin pull/N/head:pr-N && git checkout pr-N