$ git clone -n https://src.fedoraproject.org/rpms/golang-etcd-etcdctl-3.git /var/lib/mock/f40-build-2663736-67017/root/chroot_tmpdir/scmroot/golang-etcd-etcdctl-3
Cloning into '/var/lib/mock/f40-build-2663736-67017/root/chroot_tmpdir/scmroot/golang-etcd-etcdctl-3'...
$ git fetch origin 479b3f2ba15e1314be4cc18378211546985f7cf7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-etcd-etcdctl-3
 * [new ref]         479b3f2ba15e1314be4cc18378211546985f7cf7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 479b3f2 Added the README