$ git clone -n https://src.fedoraproject.org/rpms/rubygem-unf_ext.git /var/lib/mock/f31-build-110353-34017/root/chroot_tmpdir/scmroot/rubygem-unf_ext
Cloning into '/var/lib/mock/f31-build-110353-34017/root/chroot_tmpdir/scmroot/rubygem-unf_ext'...
$ git reset --hard 7a31a7fb6e7fea8753a677c9d8a1f579eeffe6c5
HEAD is now at 7a31a7f - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild