Jakes

Hi, I have a Unity project that I have been working on for about a year, I have been making commits regularly using the Plastic SCM windows desktop app. I am wanting to restart the project (a new unity project), and completely delete everything from the previous project (local files and cloud history). I want to do this within the same workspace as the previous project so that I can commit files from the new project. Is this possible? Is this a bad idea? Thank you.