$ git clone -n https://src.fedoraproject.org/rpms/golang-etcd-server-3.git /var/lib/mock/f40-build-2579394-62349/root/chroot_tmpdir/scmroot/golang-etcd-server-3
Cloning into '/var/lib/mock/f40-build-2579394-62349/root/chroot_tmpdir/scmroot/golang-etcd-server-3'...
$ git fetch origin 144e29b8326c8285d60700f1966247026270583d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-etcd-server-3
 * [new ref]         144e29b8326c8285d60700f1966247026270583d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 144e29b Added the README