$ git clone -n https://src.fedoraproject.org/rpms/glusterfs.git /var/lib/mock/f38-build-side-42-init-devel-1391128-30727/root/chroot_tmpdir/scmroot/glusterfs
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1391128-30727/root/chroot_tmpdir/scmroot/glusterfs'...
$ git fetch origin 876d0d7f0a0de6ed7edb1af15850b2ee89841406:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/glusterfs
 * [new ref]         876d0d7f0a0de6ed7edb1af15850b2ee89841406 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 876d0d7 /usr/lib/ocf/resource.d -> resource-agents