I'm guessing you are subscribed to this mailing list. Every now and then you get messages with subject lines like "Orphaned packages in rawhide". You could have seen it quite some time ago.
http://permalink.gmane.org/gmane.linux.redhat.fedora.devel/219062 -- devel mailing list devel@lists.fedoraproject.org https://lists.fedoraproject.org/admin/lists/devel@lists.fedoraproject.org
