First, you need to install protobuf pkg using your preferred package manager.
This repo uses custom protoc located at anyproto/protobuf. It adds gomobile plugin and some env-controlled options to control the generated code style.
This protobuf generator will replace your protoc binary, BTW it doesn't have any breaking changes for other protobuf and grpc code
You can override the binary with a simple command:
make setup-protoc
Then you can easily regenerate proto files:
make protos