$ git clone -n https://src.fedoraproject.org/rpms/golang-etcd-api-3.git /var/lib/mock/f40-build-2581741-62387/root/chroot_tmpdir/scmroot/golang-etcd-api-3
Cloning into '/var/lib/mock/f40-build-2581741-62387/root/chroot_tmpdir/scmroot/golang-etcd-api-3'...
$ git fetch origin 11aec12d14f4149f521f51d8e5cd57a08cca073c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-etcd-api-3
 * [new ref]         11aec12d14f4149f521f51d8e5cd57a08cca073c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 11aec12 Added the README