hooks are ignored in git worktrees other than the main worktree

[HarryWeppner]

It appears that git-gui doesn't execute hooks, e.g. pre-commit, when it is run in a git worktree other than the main worktree.

[acls]

I started using worktrees and ran into this issue. Committing from a worktree is a pain since I can't use git-gui.