remove-claude-commits

name	remove-claude-commits
description	Remove Co-Authored-By lines from git history. Use when cleaning Claude Code co-author signatures from commits.

Remove Co-Authored-By

Strip Co-Authored-By trailers from git commit messages using git-filter-repo.

Tool

Location: ~/.local/bin/remove-claude-commits

Dependencies: bun, git-filter-repo

Usage

remove-claude-commits --dry-run   # preview affected commits
remove-claude-commits             # rewrite history

Flags

• --dry-run / -n — list affected commits without modifying anything

Preconditions

• Must be inside a git repository
• Working tree must be clean (no staged or unstaged changes)

Behavior

1. Scans all branches for commits containing Co-Authored-By
2. In dry-run mode, lists affected commits and exits
3. In normal mode, uses git-filter-repo --message-callback to strip the lines
4. Reports how many lines were removed

Side Effects

• git-filter-repo removes the origin remote after rewriting (safety measure)
• All commit hashes from the first affected commit onward will change
• Rewriting invalidates existing commit signatures
• Requires git remote add, re-signing, and git push --force after running

Workflow

1. Ensure working tree is clean
2. Run remove-claude-commits --dry-run to preview
3. Note existing tags and their commit messages: git tag -l | xargs -I{} git log --format="{} %s" -1 {}
4. Push current state to a backup remote if needed
5. Run remove-claude-commits
6. Re-sign all commits: git rebase --root --exec 'git commit --amend --no-edit -S'
7. Re-tag: for each tag, find the new commit by message and git tag -f -s <tag> <new-hash>
8. Re-add remote: git remote add origin <url>
9. Fetch remote: git fetch origin
10. Diff local against remote: git diff origin/main..HEAD --stat to verify only commit messages changed (no file diffs)
11. If branch is protected, temporarily remove protection: codeberg-settings unprotect <branch>
12. Propose force push to the user: git push --force
13. Force push tags: git push --force --tags
14. Re-apply branch protection: codeberg-settings apply