cd SUB_DIR
git pull <repo> <commit>

#example
git pull git@github.com:igoumeninja/The-God-Article.git 5985a172aafb53e7d3884f8d6b960b01475a0ea5

cd ../
git add --all
git commit
git push

The git submodule update command actually tells Git that you want your submodules to each check out the commit already specified in the index of the superproject. If you want to update your submodules to the latest commit available from their remote, you will need to do this directly in the submodules.

So in summary:

git submodule add ssh://bla submodule_dir git submodule init

cd submodule_dir

git checkout master

git pull

cd ..

git commit -am "Pulled down update to submodule_dir"

Or, if you're a busy person:

git submodule foreach git pull origin master

from http://stackoverflow.com/questions/5828324/update-git-submodule-to-latest-commit-on-origin

Amazing tool to include other git project into your project. Used for The-God-Article project (https://github.com/fabinstrument/ney/tree/master/openFrameworks).

• http://git-scm.com/book/en/v2/Git-Tools-Submodules