$ git clone -n https://src.fedoraproject.org/rpms/libircclient.git /var/lib/mock/f41-build-1178656-21860/root/chroot_tmpdir/scmroot/libircclient
Cloning into '/var/lib/mock/f41-build-1178656-21860/root/chroot_tmpdir/scmroot/libircclient'...
$ git fetch origin 5c0ceca825d30440b05d6d7c906d3cb31797955e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libircclient
 * [new ref]         5c0ceca825d30440b05d6d7c906d3cb31797955e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c0ceca Eliminate use of obsolete %patchN syntax (#2283636)