After signing up for Git and going through the tutorial, I ended up Forking the Spoon-Knife repository and all subsequent actions performed on the repository are showing up in my feed.
I have un-watched the repository:

Yet still the actions are displaying in my feed:

How can I remove these items from my feed? I notice these are from over 12 days ago, so I’m not sure if my un-watching has had any effect or if there hasn’t been any activity on the repository. Has anyone else faced this issue?
Unwatching prevents new activity from being added to your feed. However, old activities still remain.
As you can see by peeking at the events of the repository, some activity occurred since you unwatched Octocat.