$ git clone -n https://src.fedoraproject.org/rpms/python-pyspike.git /var/lib/mock/f40-build-783622-133063/root/chroot_tmpdir/scmroot/python-pyspike
Cloning into '/var/lib/mock/f40-build-783622-133063/root/chroot_tmpdir/scmroot/python-pyspike'...
$ git fetch origin 8e2691ad01ddb71166d7c4cb9b0c5c8fc0dfe622:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pyspike
 * [new ref]         8e2691ad01ddb71166d7c4cb9b0c5c8fc0dfe622 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e2691a Update to 0.8.0 (close RHBZ#2222843)