How do you retrieve the submodules for a repo?

Question

For example, I have a repo, and one subfolder is empty because the code from another repo goes there...

What command do I use so the submodule is retrieved and added in all locations of my local repo where submodules are needed?

Answer 1

git submodule update --init

or (when you didn't clone the repository yet)

git clone -i /path/to/parentRepo

have a look at

git submodule --help