git gc changes ownerships of files linux

Hi team git

Running 'git -C /srv/mssioncontrol/.git gc' on linux from a user which has access to another users files will occasionally change the ownership of the file 'packed-refs'. I believe git actually overwrites the file with a new one at the end af the gc command. But details about this is not writen in the help text. Could it be a bug?

Use case: I'm using ansible to cleanup .git directories across multible servers and this issue is starting to cause problems.

My solution is to make a variable containing the user and group id before running gc command and then reapply it afterwards: current_owner_uid_gid=$(stat -c "%u:%g" /srv/mssioncontrol/.git) git -C /srv/mssioncontrol/.git gc chown -R $current_owner_uid_gid "/srv/mssioncontrol/.git"

Details: Debian GNU/Linux 12 (bookworm) git version 2.39.2

Best: zinen