I think you're fixated on the inverse of what this is. Imagine it's a true commit by Linus identified by his email address. This issue is when someone creates

I think you're fixated on the inverse of what this is. Imagine it's a true commit by Linus identified by his email address. This issue is when someone creates a GitHub profile with Linus' email address and by doing so, causes the GitHub UI to ascribe authorship of that commit to your user profile via your GitHub username and a link to your profile.