$ git clone -n https://src.fedoraproject.org/rpms/pg_auto_failover.git /var/lib/mock/f40-build-2244006-53701/root/chroot_tmpdir/scmroot/pg_auto_failover
Cloning into '/var/lib/mock/f40-build-2244006-53701/root/chroot_tmpdir/scmroot/pg_auto_failover'...
$ git fetch origin 24cfc6cc51fbd16fd5bf587777f444fec8228d30:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pg_auto_failover
 * [new ref]         24cfc6cc51fbd16fd5bf587777f444fec8228d30 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 24cfc6c Rebase to the latest upstream version