How can I specify a branch/tag when adding a Git submodule?

Question

How does git submodule add -b work?

After adding a submodule with a specific branch, a new cloned repository (after git submodule update --init

Answer 1

Git 1.8.2 added the possibility to track branches.

# add submodule to track master branch
git submodule add -b branch_name URL_to_Git_repo optional_directory_rename

# update your submodule
git submodule update --remote 

See also Git submodules