$ git clone -n https://src.fedoraproject.org/rpms/unrealircd.git /var/lib/mock/f42-build-863108-171404/root/chroot_tmpdir/scmroot/unrealircd
Cloning into '/var/lib/mock/f42-build-863108-171404/root/chroot_tmpdir/scmroot/unrealircd'...
$ git fetch origin 1e180a5a482f5f020ab58ca714520985f8a42cbb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/unrealircd
 * [new ref]         1e180a5a482f5f020ab58ca714520985f8a42cbb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e180a5 Upgrade to 6.1.9.1 (#2327604)