Also see the git-worktree(1) manpage.
This prefix command shows the following suffix commands in a popup buffer.
Checkout BRANCH in a new worktree at PATH.
Create a new BRANCH and check it out in a new worktree at PATH.
Delete a worktree, defaulting to the worktree at point. The primary worktree cannot be deleted.
Show the status for the worktree at point.
If there is no worktree at point, then read one in the minibuffer. If the worktree at point is the one whose status is already being displayed in the current buffer, then show it in Dired instead.