Software development teams transitioning to GitHub from Subversion can utilize their preferred tools, as GitHub repositories support both Git and Subversion clients. The GitHub Flow can be adapted for Subversion users by following several steps: creating a topic branch from the latest master branch, making commits within this branch, and eventually merging it into the master branch via pull requests. The process begins with a Subversion checkout, and it's advisable to start with a partial checkout to manage bandwidth effectively. Users can create and switch branches using Subversion commands, make changes, and commit them as usual. Once changes are ready, they can initiate a pull request through the GitHub web interface, discuss modifications with team members, and merge the changes into the master branch if no conflicts arise. This approach allows teams to seamlessly integrate Subversion workflows with GitHub's collaborative features.