When you sign up for a trial of either SpiraTeam or SpiraPlan you can add our TaraVault source code management system as a free add-on. This lets you initialize a new Git (or Subversion) repository, commit files, make changes and also view the branches and changes. In addition, trials of SpiraTeam/SpiraPlan also come with a built-in dummy test provider that simulates a source code repository. This is useful to see how the features work without needing to actually commit any code yourself.
This article explains the two different options you have for trying out Spira's code management features and provide guidance on which is best for you.