$ git clone -n https://src.fedoraproject.org/rpms/liberation-fonts.git /var/lib/mock/f39-build-1882488-42766/root/chroot_tmpdir/scmroot/liberation-fonts
Cloning into '/var/lib/mock/f39-build-1882488-42766/root/chroot_tmpdir/scmroot/liberation-fonts'...
$ git fetch origin f59edb4d065b19230e8727c571ab914e180ecbf9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/liberation-fonts
 * [new ref]         f59edb4d065b19230e8727c571ab914e180ecbf9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f59edb4 Add a rule to use Liberation Sans as a fallback of ArialMT.