How to add two separate git repos into one repo as two directories while preserving commit history?

Question

I was developing a full-stack web application and for that, I created two separate repositories for the front-end and back-end as I develop. The two repositories are,

1. projectName_api
2. projectName_client

Now I need to create one repository 'projectName' which contains these two separate git repositories as directories without deleting the commit history.

api --> projectName_api git repo

client --> projectName_client repo

|projectName
|--api
|--client
|--package.json

It will be better if the history of git repos can be put into branches like frontend and backend with separate history in those branches

Answer 1

The usual approach would be rather to use git submodules , referencing those two repositories in your main project repository.

That way:

• they keep their history
• they keep their own branches