$ git clone -n https://src.fedoraproject.org/rpms/libxml++.git /var/lib/mock/f31-build-71917-30800/root/thebuilddir/tmp/scmroot/libxml++
Cloning into '/var/lib/mock/f31-build-71917-30800/root/thebuilddir/tmp/scmroot/libxml++'...
$ git reset --hard 7a86eee192f8e78e1c352ad9f6d9cb8f924fd772
HEAD is now at 7a86eee - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild