Doesn't seem likely they'll voluntarily publish a paper on a virus they used as the backbone to manufacture SARS-CoV-2...
Even if it was a lab leak, it's unlikely RaTG13 was the progenitor.
Nobody seriously suspects WIV engineered the SARS-CoV2 to deliberately cause a pandemic, but negligently letting it escape is itself obviously worth covering up. Whether that happened or not, it is their misfortune that it doesn't look more like a natural chimera.
I have assumed early insistence that it was natural was considered necessary to get any possibility of cooperation from the Chinese gov't. Now that they have become uncooperative, there is no more reason to maintain the fiction.
Shi and WIT are not related to WIV, are they? This could be independent and without explicit consent of WIV?
The original article, the https://en.wikipedia.org/wiki/COVID-19_misinformation comments, and "urban" food security arguments, which rate near the necessity of cannibalism, distract from continuing to ban the most likely sources of zoonotic diseases and wildlife smuggling that are the wet markets.