Git, SVN and WordPress plugins repository, need help…

I have a special installation of WordPress (meaning it has specific plugins, settings, users, etc…) that I use to deploy all of my clients sites from, and it is under version control with Git.

Within this, though, is one of my plugins that is listed in the WordPress plugins repository. However, I’m struggling to add it as a remote SVN repository that I can push and pull from properly and I’m hoping someone could walk me through it?

Thanks!