$ git clone -n https://src.fedoraproject.org/rpms/polkit.git /var/lib/mock/f42-build-3426593-45197/root/chroot_tmpdir/scmroot/polkit
Cloning into '/var/lib/mock/f42-build-3426593-45197/root/chroot_tmpdir/scmroot/polkit'...
$ git fetch origin 386a7173e562a156186c4f0127ff5ce2bf5b5a6a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/polkit
 * [new ref]         386a7173e562a156186c4f0127ff5ce2bf5b5a6a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 386a717 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild