$ git clone -n https://src.fedoraproject.org/rpms/kajongg.git /var/lib/mock/f40-build-2227235-53007/root/chroot_tmpdir/scmroot/kajongg
Cloning into '/var/lib/mock/f40-build-2227235-53007/root/chroot_tmpdir/scmroot/kajongg'...
$ git fetch origin 9ea31c5ecdbd6d8e49ca4ee8d583a041c331f7fa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kajongg
 * [new ref]         9ea31c5ecdbd6d8e49ca4ee8d583a041c331f7fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9ea31c5 24.01.85