Julia Evans on Nostr: does anyone understand why, inside a git worktree, on Mac OS, `git rev-parse head` ...

does anyone understand why, inside a git worktree, on Mac OS, `git rev-parse head` and `git rev-parse HEAD` are different?

`git rev-parse head` seems to give me the revision of the value of HEAD in the "main" worktree

(no, I don't have a branch or tag called "head”)