This happens to many people on twitter, but I will mention Elon Musk specifically as he seems to have a huge spam issue within the tweets he makes.
If you see someone or some account looking as though they are trying to be a fan account or straight up impersonation of the main tweet user and they are linking a giveaway or trying to sell something. DO NOT CLICK/GO TO THE LINK!!
Here are some examples :
Here we have a response using special characters trying to be Tesla, advertising a giveaway with some text description response below. As you can see the goal is to make you visit and fall for the scam on the site. They don't even link it properly in the tweet I imagine because it is linked to spam.
Here we have another typical scam tweet. Botted to look legitimate, again using the keywords in the url but not linking it directly so you can click it, likely because it is blocked for spam. The username is faking Elon Musk with special characters once again and a bunch of other characters for some reason? Maybe a filter twitter put in place.
Avoid these at all costs. They are out too steal everything from you and they must be working which is why they keep doing these. DO NOT CLICK/GO TO THE LINKS!