$ git clone -n https://src.fedoraproject.org/rpms/bodhi-messages.git /var/lib/mock/f40-build-2074215-49392/root/chroot_tmpdir/scmroot/bodhi-messages
Cloning into '/var/lib/mock/f40-build-2074215-49392/root/chroot_tmpdir/scmroot/bodhi-messages'...
$ git fetch origin 8de99be314cca7becaef5d1ccdd199dee8661b52:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bodhi-messages
 * [new ref]         8de99be314cca7becaef5d1ccdd199dee8661b52 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8de99be Update to 8.0.0