$ git clone -n https://src.fedoraproject.org/rpms/bes.git /var/lib/mock/f41-build-3152146-40629/root/chroot_tmpdir/scmroot/bes
Cloning into '/var/lib/mock/f41-build-3152146-40629/root/chroot_tmpdir/scmroot/bes'...
$ git fetch origin 726ffa8a3b7020c2ae7873895ad9a2c39a2e5928:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bes
 * [new ref]         726ffa8a3b7020c2ae7873895ad9a2c39a2e5928 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 726ffa8 Orphaned for 6+ weeks