$ git clone -n https://src.fedoraproject.org/rpms/librdkafka.git /var/lib/mock/f31-build-94569-32495/root/thebuilddir/tmp/scmroot/librdkafka
Cloning into '/var/lib/mock/f31-build-94569-32495/root/thebuilddir/tmp/scmroot/librdkafka'...
$ git reset --hard e69a6bab1fbcbca7e5637d474fb88c5ea4afa1b5
HEAD is now at e69a6ba - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild