SHELL

git submodule update

#https://chrisjean.com/git-submodules-adding-using-removing-and-updating/

#it checks out the specific version of the project and respective submodule recursively (if applicable)
#but not within a branch.
git submodule update --init --recursive

#or
git submodule init && git submodule update --recursive

update submodule git

git submodule init
git submodule update

git update submodule to latest

cd projB/projA

git pull origin master