Git Workflow

Covers branching strategies, conventional commits, CI/CD automation, repository hygiene, and git internals. GitHub CLI usage is handled by a separate github-cli skill; this skill focuses on git workflow patterns and CI/CD configuration.

Quick Reference

Area	Key Practice
Branching	Trunk-based development with short-lived feature branches
Commits	Conventional commits with imperative mood
History	Linear history via rebase; squash noisy commits
PRs	Small, stacked changes; no mega PRs
Main branch	Always deployable; broken main is an emergency
CI/CD	Modular GitHub Actions with reusable workflows
Merging	Green CI + review required before merge
Versioning	Semantic Release or Changesets (never manual)
Branches	Max 48 hours lifespan; auto-prune stale/merged
Secrets	OIDC Connect in pipelines; never hardcode tokens
Signing	Sign commits with SSH or GPG keys for verified authorship

Branch Naming

Type	Use For	Example
feat	New features	feat/add-user-auth
fix	Bug fixes	fix/login-redirect
chore	Maintenance	chore/update-deps
docs	Documentation	docs/api-reference
refactor	Code restructuring	refactor/auth-module

Conventional Commit Types

Type	Purpose	Version Bump
feat	New features	Minor
fix	Bug fixes	Patch
docs	Documentation only	None
style	Formatting, no logic changes	None
refactor	Neither fix nor feature	None
perf	Performance improvements	Patch
test	Adding or correcting tests	None
build	Build system or external dependencies	None
ci	CI configuration changes	None
chore	Tooling, maintenance, non-src changes	None
revert	Revert a previous commit	Varies

Append ! after type/scope for breaking changes (major version bump).

Pre-Merge Checks

All PRs require before merge:

• Lint
• Type check
• Tests
• Security scan
• Review approval (human or automated)

Auto-merge is acceptable for low-risk PRs when pipeline succeeds.

Troubleshooting

Issue	Resolution
Merge conflicts on long-running branch	Rebase onto main frequently; break remaining work into new branch if over 48 hours
Broken main branch	Treat as emergency; revert offending commit, then fix forward on a branch
Lost commits or data recovery	Use git reflog and object inspection (git cat-file, git fsck)
CI pipeline failures	Check reusable workflow versions; verify OIDC permissions
Stacked PR conflicts after rebase	Restack entire chain from base; Graphite handles automatically with gt restack
Large file accidentally committed	Use git filter-repo to remove from history (not git filter-branch)

Common Mistakes

Mistake	Correct Pattern
Keeping feature branches alive longer than 48 hours	Merge or rebase daily; break large work into stacked PRs
Committing directly to main without branch protection	Enable branch protection rules requiring CI and review
Using merge commits that clutter history	Rebase and squash to maintain linear history
Hardcoding tokens in GitHub Actions workflows	Use OIDC Connect for authentication in CI/CD pipelines
Creating monolithic CI workflows in a single file	Split into reusable workflows and composite actions
Fix bug as commit message	fix(scope): correct bug description (conventional)
feat: Added feature (past tense)	feat: add feature (imperative mood, lowercase)
Using git filter-branch for history rewriting	Use git filter-repo (faster, safer, officially recommended)
Pushing to main directly	Create feature branch first
Unsigned commits in shared repositories	Configure commit signing with SSH or GPG keys

Delegation

• Audit repository branch hygiene and stale branches: Use Explore agent to list and classify branch age and merge status
• Set up CI/CD pipelines with reusable workflows: Use Task agent to create modular GitHub Actions configurations
• Design branching strategy for a new project: Use Plan agent to evaluate trunk-based vs Git Flow based on team needs

References

• branching-strategies.md -- Git Flow, GitHub Flow, GitLab Flow, One-Flow comparison and selection criteria
• trunk-based-development.md -- Core principles, workflow steps, feature flags, and anti-patterns
• stacked-changes.md -- Stacked PRs concept, manual stacking, Graphite automation, best practices
• conventional-commits.md -- Commit format, types, scopes, breaking changes, and full workflow
• github-actions.md -- Reusable workflows, matrix testing, deployment environments, security
• git-internals.md -- Object model, SHA hashing, index, references, packfiles, garbage collection
• automation-scripts.md -- Branch pruning, semantic release, security scanning, stacked PR helpers
• issue-templates.md -- Bug report, feature request, task, and minimal issue templates
• advanced-operations.md -- Commit signing, interactive rebase, worktrees, bisect, reflog recovery, and --force-with-lease