$ git clone -n https://src.fedoraproject.org/rpms/gfs-eustace-fonts.git /var/lib/mock/f39-build-1679257-41006/root/chroot_tmpdir/scmroot/gfs-eustace-fonts
Cloning into '/var/lib/mock/f39-build-1679257-41006/root/chroot_tmpdir/scmroot/gfs-eustace-fonts'...
$ git fetch origin 29e083c8416c1feaea2a63f05c69521de1fbdb19:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gfs-eustace-fonts
 * [new ref]         29e083c8416c1feaea2a63f05c69521de1fbdb19 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29e083c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild