Probably very silly question, - but I\'ve been specifying submodules up until now in .gitmodules file. It recently struck me that perhaps it\'s possible to just use .git/config
Same answer than .git/info/exclude and .gitignore.
The .gitmodules file can be included in the repository and shared with everyone (that is, it can be added and committed like any regular file), whereas anything in .git (like .git/config) is private (you cannot add it in the repository).