I have a public repository that receives frequent commits by a GitHub Bot, but each of these commits is shown on my "Following"-Page, even though I do not follow the bot. How can I prevent the spam? Blocking the bot is not an option, since it wouldn't be able to push to my repository anymore.
The best (and only) option is to ignore the repository. The default looks like this:
If you own the repository, you automatically watch it..
When you click on it, you can select a few options, sadly you cannot block activities from a specific user/bot, but you can select other options that may suit you:
I the repository is not actively used by people (like the new readme profile front page) then you can simply choose "Ignore", otherwise I would recommend choosing the first one, "Participating and @mentions". (Although you will miss some contributions).
