$ git clone -n https://src.fedoraproject.org/rpms/rygel.git /var/lib/mock/f40-build-2251447-54132/root/chroot_tmpdir/scmroot/rygel
Cloning into '/var/lib/mock/f40-build-2251447-54132/root/chroot_tmpdir/scmroot/rygel'...
$ git fetch origin e26612f70473f47953bddfa74257d22501bf0e35:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rygel
 * [new ref]         e26612f70473f47953bddfa74257d22501bf0e35 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e26612f Update to 0.42.5