He didn’t say if those commits were explicitly invited or they just showed up out of the blue and got an offer…..I have my guess as to which category all three likely fall into….
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .