notes is a #202205251209 command that add, removes or reads notes attached to the commits. This can become handy if you want to have a release notes separated from the commit history (this has been deprecated by GitHub).
To add note, use the command add {commit}. To remove notes, use the command remove {commit...} on either single commit or multiple commits. Showing note can be done by the command show {commit}. If the commit is omitted, notes will referring to the current commit by default.