title: Using someone else's repo as a Git Submodule on GitHub
body: <p>I am trying to find out if it is possible to use someone else's repository (or branch of a repository) as a Submodule in your own Git repository. Documentation on github itself is either missing, or I'm not using the right terminology to look for it. If this isn't the preferred way to go about including a public repository as a shared library within ones git project, suggestions as an alternative best practice would be appreciated.</p>