$ git clone -n https://src.fedoraproject.org/rpms/mozilla-zilla-slab-fonts.git /var/lib/mock/f39-build-1779778-41544/root/chroot_tmpdir/scmroot/mozilla-zilla-slab-fonts
Cloning into '/var/lib/mock/f39-build-1779778-41544/root/chroot_tmpdir/scmroot/mozilla-zilla-slab-fonts'...
$ git fetch origin 229ec231ecca02a1cdc7b0989519fd9fbaecbcdb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mozilla-zilla-slab-fonts
 * [new ref]         229ec231ecca02a1cdc7b0989519fd9fbaecbcdb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 229ec23 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild