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

I removed the .git in that particular folder. Then after I ran the command

git add folder_which_has_deleted_dot_git
git commit -m "Changed to standalone repo"

Then after that I was able to track the folder and convert it into a common / standalone repository.