$ git clone -n https://src.fedoraproject.org/rpms/golang-etcd-tests-3.git /var/lib/mock/f40-build-2575953-62277/root/chroot_tmpdir/scmroot/golang-etcd-tests-3
Cloning into '/var/lib/mock/f40-build-2575953-62277/root/chroot_tmpdir/scmroot/golang-etcd-tests-3'...
$ git fetch origin c314a74fafa271caf3673523e8cc12c1d30e687f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-etcd-tests-3
 * [new ref]         c314a74fafa271caf3673523e8cc12c1d30e687f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c314a74 Added the README