$ git clone -n https://src.fedoraproject.org/rpms/cjkuni-ukai-fonts.git /var/lib/mock/f45-build-6730-350/root/chroot_tmpdir/scmroot/cjkuni-ukai-fonts
Cloning into '/var/lib/mock/f45-build-6730-350/root/chroot_tmpdir/scmroot/cjkuni-ukai-fonts'...
$ git fetch origin e4f4632e5a595266ebdc7eaaac51bc0695647546:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cjkuni-ukai-fonts
 * [new ref]         e4f4632e5a595266ebdc7eaaac51bc0695647546 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e4f4632 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild