What Are Git Worktrees, and Why Should You Use Them?
Original: What are git worktrees, and why should I use them?
GitHub explains git worktrees — a 2015 feature now popular with AI-assisted coding workflows.
Git worktrees let developers check out multiple branches simultaneously in separate directories, all sharing one repository's object store. The feature has existed since Git 2.5 in 2015 but has surged in relevance alongside AI coding agents that benefit from isolated working directories. This GitHub Blog tutorial covers what worktrees are, how to use them, and when they make sense.
Git worktrees are a native Git feature introduced in Git 2.5 (2015) that allow a single repository to have multiple working directories checked out at the same time. Rather than cloning a repository a second time or constantly stashing changes to switch branches, a developer can run `git worktree add` to create a linked working directory that points to a different branch — all while sharing the same underlying object database, so no disk space is wasted duplicating history.
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