Proper Git workflow for combined OS and Private code?

Question

I have a closed source project that is built on my open source framework. I want to know how I should structure my workflow. Below is my best guess using git with submodules

Answer 1

Make the public repo a submodule inside the private one. When pushing, remember you have to push them both. Also remember to check in the submodule itself in the private repo, so it tracks what revisions of the submodule it is using.