$ git clone -n https://src.fedoraproject.org/rpms/cjkuni-uming-fonts.git /var/lib/mock/f40-build-2339514-59655/root/chroot_tmpdir/scmroot/cjkuni-uming-fonts
Cloning into '/var/lib/mock/f40-build-2339514-59655/root/chroot_tmpdir/scmroot/cjkuni-uming-fonts'...
$ git fetch origin 6b7c9b037b1217e25fe2b1fb54a380365adc3858:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cjkuni-uming-fonts
 * [new ref]         6b7c9b037b1217e25fe2b1fb54a380365adc3858 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b7c9b0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild