$ git clone -n https://src.fedoraproject.org/rpms/libkmahjongg.git /var/lib/mock/f40-build-2316746-58069/root/chroot_tmpdir/scmroot/libkmahjongg
Cloning into '/var/lib/mock/f40-build-2316746-58069/root/chroot_tmpdir/scmroot/libkmahjongg'...
$ git fetch origin b741c3f08c68850a208474991c3b89be90d5aac7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkmahjongg
 * [new ref]         b741c3f08c68850a208474991c3b89be90d5aac7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b741c3f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild