$ git clone -n https://src.fedoraproject.org/rpms/mod_proxy_cluster.git /var/lib/mock/f42-build-side-1-3523526-46210/root/chroot_tmpdir/scmroot/mod_proxy_cluster
Cloning into '/var/lib/mock/f42-build-side-1-3523526-46210/root/chroot_tmpdir/scmroot/mod_proxy_cluster'...
$ git fetch origin 7d81dae89564607e8ae5dc58df0c7754e9a3f865:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mod_proxy_cluster
 * [new ref]         7d81dae89564607e8ae5dc58df0c7754e9a3f865 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d81dae Upgrade to 1.3.22.Final