$ git clone -n https://src.fedoraproject.org/rpms/golang-etcd-client-pkg-3.git /var/lib/mock/f40-build-2633631-65952/root/chroot_tmpdir/scmroot/golang-etcd-client-pkg-3
Cloning into '/var/lib/mock/f40-build-2633631-65952/root/chroot_tmpdir/scmroot/golang-etcd-client-pkg-3'...
$ git fetch origin e5356bd0ff1b90546bc88b2c103ffbccdbff2af4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-etcd-client-pkg-3
 * [new ref]         e5356bd0ff1b90546bc88b2c103ffbccdbff2af4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5356bd Added the README