$ git clone -n https://src.fedoraproject.org/rpms/hfg-gmuend-openmoji-fonts.git /var/lib/mock/f40-build-2199266-51730/root/chroot_tmpdir/scmroot/hfg-gmuend-openmoji-fonts
Cloning into '/var/lib/mock/f40-build-2199266-51730/root/chroot_tmpdir/scmroot/hfg-gmuend-openmoji-fonts'...
$ git fetch origin d893fdd581f60b60f097fd72882fd7dd95de7675:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hfg-gmuend-openmoji-fonts
 * [new ref]         d893fdd581f60b60f097fd72882fd7dd95de7675 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d893fdd Update to version 15.0.0