Why use Git worktrees?

A Git worktree lets you check out another branch in a separate directory while sharing the same repository. This is useful when people or agents work on different tasks at the same time.

Give each task a clear branch and directory, and avoid simultaneous edits to the same checkout. Isolation reduces accidental interference, but does not resolve conflicting changes automatically: review and integrate each branch deliberately. Worktrees share repository data, so they are not a security boundary.