My repo has 100 commits in it right now. I need to rollback the repository to commit 80, and remove all the subsequent ones.

Why?

This repo is supposed to be for merging from miscellaneous users. A bunch of merges went in as commits from me, due to excessive editing. That was due to a mislabeling of my remote branches, where 3 developers were labeled as each other. I need to reset to that point, and then pull forwards.

I wanted to rebase, as in this example: [How can I remove a commit on GitHub?](https://stackoverflow.com/questions/448919/how-can-i-remove-a-commit-on-github)

However, git wants me to do a lot of conflict management. Is there a simpler way?