How does Google manage protobufs

[hebetude]

I've heard that all you do at Google is move around protobufs. We are trying to do the same thing. Can someone outline how the protobufs are available publicly in googleapis but developers are able to deploy local grpc servers using them? How do they manage open source protobufs alongside private internal service protobufs?

[0xdeadc0de]

https://github.com/google/copybara

[mav3rick]

You can have multiple repos ? One public and one internal referring the public protos ? Sync them and get going ?