Inconsistent results from git rev-parse --show-toplevel

I ran into an issue where 'git rev-parse --show-toplevel' is reporting the current directory instead of the root of the repository. In my case I'm running it from within the pre-commit hook, and it seems like it might be related to GIT_DIR being set. It may also be related to using worktrees. Haven't had a chance to test thoroughly.

Regards, -Andrew

Git Version -  2.25.0

pre-commit hook

#!/bin/bash env pwd git rev-parse --show-toplevel cd subdir pwd git-rev-parse --show-toplevel

Create a repo with a subdirectory.   Commit as normal.  Output from the hook looks as expected.  Create a worktree, and commit there and it appears as though it is returning incorrect results after changing directory.

Git repo is in /tmp/revparse_test Worktree is in /tmp/revparse_test_worktree

Committing in /tmp/revparse_test yields the below, as expected /tmp/revparse_test /tmp/revparse_test /tmp/revparse_test/subdir /tmp/revparse_test

Committing in the worktree yields below, with the final line seeming incorrect. /tmp/revparse_test_worktree /tmp/revparse_test_worktree /tmp/revparse_test_worktree/subdir /tmp/revparse_test_worktree/subdir