Creating a commit with multiple authors→
You can attribute a commit to more than one author by adding one or more Co-authored-by trailers to the commit's message. Co-authored commits are visible on GitHub.
Creating a commit on behalf of an organization→
You can create commits on behalf of an organization by adding a trailer to the commit's message. Commits attributed to an organization include an on-behalf-of badge on GitHub.
Changing a commit message→
If a commit message contains unclear, incorrect, or sensitive information, you can amend it locally and push a new commit with a new message to GitHub. You can also change a commit message to add missing information.