$ git clone -n https://src.fedoraproject.org/rpms/lucene++.git /var/lib/mock/f31-build-84826-31580/root/chroot_tmpdir/scmroot/lucene++
Cloning into '/var/lib/mock/f31-build-84826-31580/root/chroot_tmpdir/scmroot/lucene++'...
$ git reset --hard aa601881dc2028558620efdb7aed80f8cdebbdea
HEAD is now at aa60188 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild