This problem is caused by adding a formatter to your editor, instead of adding it to your project (or one of your contributors adding it to their editor). But if you adopt a formatter into the project, then this isn't a problem. Create one commit called "reformat all files", and then use `--ignore-rev` to never see it in your git log.

If your contributor is changing thousands of lines in a diff to fix a typo, ask them not to do that :)