Git: How to make outer repository and embedded repository work as common/standalone repository?

Question

I have a big project(let\'s say A repo), and it there one child folder which is come from B repo. I would meet warning like below when I commit fr

Answer 1

If you don't care about the exact version of B A is using, you can keep your current setting (nested git repos).

You will have the "embedded repo" warning, but beside that, both repos will behave as you expect, each one adding, committing and pushing only their repos.
Note: you can make that warning shorted/empty with git config advice.addEmbeddedRepo