Git Integration
Claude Code understands git repositories natively. It can analyze change history, suggest commit messages, draft PR descriptions, and help across your entire development workflow.
What Claude Code reads from gitโ
When you launch Claude Code, it automatically picks up:
- The current branch name
- Recent commit history
- Staged / unstaged changes
- File structure and modification times
Thanks to this context, you can simply say "review what I just changed" and it knows exactly what changed before responding.
Automatic commit message generationโ
One of the most frequently used features.
# Stage your changes first
git add src/auth/login.ts tests/auth.test.ts
# Ask Claude Code for a commit message
claude
> Look at the staged changes and write a commit message
Claude Code analyzes the actual code changes and suggests a meaningful commit message:
feat(auth): add JWT refresh token logic
- Automatically renew expired access tokens
- Add refresh token validation middleware
- Add 3 related unit tests
Enforcing the Conventional Commits formatโ
Add the following to CLAUDE.md and messages will always follow the Conventional Commits format:
## Commit message rules
- Conventional Commits format required: type(scope): description
- type: feat, fix, docs, style, refactor, test, chore
- Write the description in English
- Include the reason for the change and its impact in the body
AI code reviewโ
Get a review from Claude Code before opening a PR.
# Review the diff between the current branch and main
claude
> Review my current changes compared to the main branch
Or for a specific file:
claude
> Review src/auth/login.ts, focusing on security vulnerabilities.
Be specific when requesting a reviewโ
| Request | What it analyzes |
|---|---|
| "Find security vulnerabilities" | SQL injection, XSS, auth bypass, etc. |
| "Find performance issues" | N+1 queries, unnecessary loops, memory leaks |
| "Find edge cases" | null handling, empty arrays, type mismatches |
| "Analyze test coverage" | Untested code paths |
Automatic PR descriptionsโ
claude
> Write a GitHub PR description for the changes on this branch
Example output:
## Changes
- Add JWT-based authentication system
- Implement automatic renewal when the access token expires
- Add login/logout API endpoints
## Testing
- [ ] Confirm unit tests pass
- [ ] Test the E2E login flow
## Notes
- Requires the JWT_SECRET environment variable
Combining with a branching strategyโ
Claude Code is even more effective when paired with branch-based development.
# 1. Create a feature branch
git checkout -b feature/user-auth
# 2. Implement with Claude Code
claude
> Implement a JWT authentication system, following the tech stack in CLAUDE.md.
# 3. Review after implementation
claude
> Review the code you just wrote
# 4. Generate a commit message
git add .
claude
> Suggest a commit message
# 5. Generate a PR description
claude
> Write a PR description
git blame and history analysisโ
claude
> Look at the git history for auth/login.ts and explain why it's structured this way
claude
> Summarize who changed what last week
Claude Code analyzes information from git log, git blame, and more, and explains how the code evolved.
Resolving conflictsโ
# When a merge conflict occurs
claude
> Look at the conflicted files and tell me how to resolve them
Claude Code analyzes the conflict markers (<<<<<<<, =======, >>>>>>>), figures out the intent behind both sides of the change, and suggests a resolution.
Managing .gitignoreโ
claude
> Create a .gitignore that fits this project
Or when a file is accidentally being tracked:
claude
> node_modules is being tracked by git โ how do I remove it?
Real-world workflow: a day of AI-assisted developmentโ
# Morning: start work
git pull origin main
git checkout -b feature/payment-integration
claude
> Summarize the changes merged into main yesterday
# During work: implement
claude
> Implement Stripe payment integration, including webhook handling.
# Wrapping up: clean up
git add .
claude
> Review the changes (focus on security and edge cases)
claude
> Write a commit message
git commit -m "$(claude -p 'one-line commit message for the staged changes')"
# Open the PR
claude
> Write a PR description
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