$ git clone -n https://src.fedoraproject.org/rpms/un-core-fonts.git /var/lib/mock/f39-build-1726121-41237/root/chroot_tmpdir/scmroot/un-core-fonts
Cloning into '/var/lib/mock/f39-build-1726121-41237/root/chroot_tmpdir/scmroot/un-core-fonts'...
$ git fetch origin 51d4ca5ce4f7836d83fb500fa00419e343587510:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/un-core-fonts
 * [new ref]         51d4ca5ce4f7836d83fb500fa00419e343587510 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 51d4ca5 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild