(GitHub Action) Improve auto-commits to copied branches. (#193)

This commit was copied from the master branch.

Commit: 80c8656
Author: okamsn <[email protected]>
Date: 2024-03-08 00:55:57 +0000

Improve auto-commits to copied branches. (#193)

- Add a branch that only contains the `loopy` package.
- Use the copied commit's message in the new commit.