$ git clone -n https://src.fedoraproject.org/rpms/jxrlib.git /var/lib/mock/f31-build-63036-29272/root/chroot_tmpdir/scmroot/jxrlib
Cloning into '/var/lib/mock/f31-build-63036-29272/root/chroot_tmpdir/scmroot/jxrlib'...
$ git reset --hard c6dd07f0a3a0c0b2d567cdf4fbf7c2600815a9f5
HEAD is now at c6dd07f - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild