bug report

[Eyal Post <eyalpost@gmail.com>]

What did you do before the bug happened? (Steps to reproduce your issue)
1. I have a script which creates a git worktree and checks out a few
files from the master branch
2. When this script runs "stand alone" - everything works fine
3. When this script runs from a "pre-commit" hook it fails with an
error: "fatal: Unable to create '/tmp/wt-1/.git/index.lock': Not a
directory"

The content of the script is (simplified example):
git worktree add /tmp/wt-1 master --no-checkout --detach
cd /tmp/wt-1
git checkout master .


What did you expect to happen? (Expected behavior)
I would expect the script to run just fine as part of the pre-commit hook

What happened instead? (Actual behavior)
An error about .git not being a directory is shown

What's different between what you expected and what actually happened?
An error instead of completing successfully

Anything else you want to add:

Please review the rest of the bug report below.
You can delete any lines you don't wish to share.


[System Info]
git version:
git version 2.39.0
cpu: x86_64
no commit associated with this build
sizeof-long: 8
sizeof-size_t: 8
shell-path: /bin/sh
feature: fsmonitor--daemon
uname: Darwin 21.6.0 Darwin Kernel Version 21.6.0: Wed Aug 10 14:25:27
PDT 2022; root:xnu-8020.141.5~2/RELEASE_X86_64 x86_64
compiler info: clang: 14.0.0 (clang-1400.0.29.202)
libc info: no libc information available
$SHELL (typically, interactive shell): /bin/zsh


[Enabled Hooks]
pre-commit