Question

I’ve a stable and functioning project X. I want a module to be added to it and that’s is from some other project Y on github in my modules directory.

I’ve git remote add Y [e-mail]/Y.git followed by git fetch Y
But there there is nothing on Y directory yet . I followed http://progit.org/book/ch6-7.html
and also did the checkout but still the directory is empty

I don’t want to break my existing project for submoduling have I already done anything wrong with it ?

Answer 1

The commands you ran were as if Y was a clone of X, which is not the case.

Instead you have to register it as a submodule of X, with git submodule add, and check them out with git submodule init --update

git submodule add [e-mail]/Y.git modules/Y
git submodule init --update