When the assignment repository is created for you, github will send you an invitation email, but if this is lost, or if you elect to not receive these emails, this page will help you navigate to the invitations for your own repository for the assignment. If you try to get to a repository for which you do not have access, the link will not work.
If you should have access but the link gets a 404, please let us know at compsci-351@uwm.edu so that we can re-issue the invitation.