One example is that when I want to torch the history of a branch, I would create an orphan branch from its current state, and create the root commit for force-pushing.
It's easy to understand why. For example, I use GitHub Actions to deploy my static website onto GitHub Pages, and when there's too many history bloating the repository, I would "reset" the deployment branch and torch its history, since that branch contains solely of program-generated content (the built website).
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…