pre-commit changes current master?

When I check out the current master branch and run `pre-commit install && pre-commit run --all-files`, it changes a bunch of files.

Should the master be fixed, or pre-commit updated?

Check out the current master branch and run `pre-commit install && pre-commit run --all-files` to reproduce the reported changes. Inspect the repository's pre-commit configuration and the resulting file modifications to determine whether master or the hook setup is responsible. Done means the intended source of the changes is identified and the clean branch no longer produces unexplained modifications.

Written by the indexing model from the issue text.