i have a private repo and i want to mirror it to a public repo. I want the public repo to be devoid of the commit history. Yet I also want the public repo to be set up in a manner that allows folks outside my org to make pull requests. I know I can do something like what is found here https://github.com/pixta-dev/repository-mirroring-action/blob/main/mirror.sh but I need some help modifying it.