$ git clone -n https://src.fedoraproject.org/rpms/monsterz.git /var/lib/mock/f41-build-1273156-23132/root/chroot_tmpdir/scmroot/monsterz
Cloning into '/var/lib/mock/f41-build-1273156-23132/root/chroot_tmpdir/scmroot/monsterz'...
$ git fetch origin b2346183fb9724c76aa74225e9e0cc17f2c5feeb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/monsterz
 * [new ref]         b2346183fb9724c76aa74225e9e0cc17f2c5feeb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b234618 Eliminate use of obsolete %patchN syntax (#2283636)