$ git clone -n https://src.fedoraproject.org/rpms/kajongg.git /var/lib/mock/f41-build-side-1-2800193-32800/root/chroot_tmpdir/scmroot/kajongg
Cloning into '/var/lib/mock/f41-build-side-1-2800193-32800/root/chroot_tmpdir/scmroot/kajongg'...
$ git fetch origin f2b4a03958941dcc4bc1743792c49c31347f239b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kajongg
 * [new ref]         f2b4a03958941dcc4bc1743792c49c31347f239b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2b4a03 24.08.1