I'm gonna be too lazy to dig up sources for what I'm about to say. But I've read some speculation that the current coronavirus came from a bat that's part of the same region/bat cluster/cave that SARS did. But this was part of a much larger speculation that the current outbreak came out of the wuhan lab, when a researcher came into contact with bat urine/blood, died, and passed the infection onto an undertaker. there's a whole level of speculation there, and several people involved seem to have been disappeared. Old interns are nowhere to be found, there were job postings in oct/nov timeframe in the lab relevant to coronaviruses in bats, etc etc. /tinfoil_hat
Wow. That'd be quite the fuck up. I mean, maybe they were sampling bat caves, to check for SARS-CoV-like viruses. Which would have been prudent. But then maybe they were sloppy, so many died, and it escaped the lab.
If you could find sources, that'd be an amazing story!