I have cloned electron-quick-start, which is licensed as CC0 1.0 (Public Domain). It's purpose is to help new users to learn Electron. I used it as a scaffolding to make a utility app that I'm using for live debugging. I would like to make this available others to use, but want to make sure I'm doing it in the right way. The changes I've made don't necessarily contribute to the intent of the original repo, so I don't feel like I should be forking and making a pull request.
Do I just delete the old repo history, rename everything, and put it on Github with a mention of where it came from? Should I at least preserve the git history? What should I do in this situation to preserve history and attribution, yet completely rebrand it as a utility app?