I've seen an article claiming that it spread from the Wuhan Institute of Virology. But not in the sense that they created, improved or selected it. I gather that they were simply isolating and studying viruses from bats that had been collected in southern China. And they were doing that based on concerns about new pandemics, given experience with SARS and MERS, and the expectation that there would be more zoonotic jumps from bat populations.