This is a two-step process, which involved a bit of trial and error in finding the right URL un-shorteners.
First of all, I tried a bunch of URL-unshorteners on the emoji-URL, until I found one that worked.
Unfortunately, I wasn't able to feed that back to itself; it looped back to that same URL.
But Unshorten.it, which choked on the emoji, could handle this URL perfectly well and told me it pointed to
The description it found for that site contains some words that are NSFW, so I won't repeat it here, but it's obviously spam to say the least, and possibly dodgy in other ways as well.