I'm inclined to "Bugzilla -> Gitlab -> GitHub" approach, so I asked INFRA if they can help with requesting GitHub support: https://issues.apache.org/jira/browse/INFRA-22618
Does anybody want to try https://github.com/llvm/bugzilla2gitlab/tree/llvm with JMeter's Bugzilla? Gitlab could probably be launched via Docker, so there's no rate limiting and so on. Vladimir