git worktrees

Manage multiple linked working trees from a single repository to handle concurrent tasks without switching branches.

Git worktrees eliminate the overhead of stashing or cloning duplicate repos when context switching. By running 'git worktree add ../hotfix master', you check out a specific branch into a separate directory while sharing the same .git history. This setup allows you to run long-duration test suites in one folder while actively refactoring code in another. It is the professional standard for managing urgent patches (hotfixes) and complex code reviews simultaneously without disrupting your primary development environment.

https://git-scm.com/docs/git-worktree