$ git clone -n https://src.fedoraproject.org/rpms/xmms2.git /var/lib/mock/f39-build-1638446-40057/root/chroot_tmpdir/scmroot/xmms2
Cloning into '/var/lib/mock/f39-build-1638446-40057/root/chroot_tmpdir/scmroot/xmms2'...
$ git fetch origin b8deea3a187b4b549bafc14a447c94e843c7f786:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xmms2
 * [new ref]         b8deea3a187b4b549bafc14a447c94e843c7f786 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8deea3 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild