So, updating all my submodules is done by running
git submodule foreach \'git pull origin master\'
How do I update a specific submo
I end up there by searching how to update specific submodule only, which means for me, updating a submodule to the ref pointed by its super-repo. Which is not the question nor the answer but only the title.
So in a hope of helping some others like me the answer to the question title is :
git submodule update
which will put this submodule in the state of the ref commited in the super-repo.