Here is what you need to need to know regarding the Fake Clone Message. It was a hoax message which basically went viral on Facebook. It claimed that the sender had received a duplicate friend request from the recipient.
The Facebook account getting cloned were reported by several users of Facebook. It was reported after they claimed that they had received a duplicate friend request message. However, Facebook is yet to give any comments on this. Also, Facebook had experienced a similar mass cloning scam in the year 2016.
People have also reached with their messages on social media stating that their accounts have been hacked.