$ git clone -n https://src.fedoraproject.org/rpms/rmol.git /var/lib/mock/f40-build-804159-144448/root/chroot_tmpdir/scmroot/rmol
Cloning into '/var/lib/mock/f40-build-804159-144448/root/chroot_tmpdir/scmroot/rmol'...
$ git fetch origin fd38b49013bace58260e775b2c45a8c6817c6466:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rmol
 * [new ref]         fd38b49013bace58260e775b2c45a8c6817c6466 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd38b49 Upstream upgrade