$ git clone -n https://src.fedoraproject.org/rpms/liquidwar.git /var/lib/mock/f42-build-side-1-3501638-45974/root/chroot_tmpdir/scmroot/liquidwar
Cloning into '/var/lib/mock/f42-build-side-1-3501638-45974/root/chroot_tmpdir/scmroot/liquidwar'...
$ git fetch origin 74268e5e31a0ed2fd3047f4042b0517dcad9d573:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/liquidwar
 * [new ref]         74268e5e31a0ed2fd3047f4042b0517dcad9d573 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74268e5 Fix FTBFS