There are no discovered bat populations in the Wuhan region with a SARS-COV2 ancestor, that's more likely.
That the only source of bats infected with a SARS-COV2 relative is in the Yunnan province, that's pretty unlikely.
> With over 100 species recognised, China has one of the richest bat faunas in the Palaearctic.
You need to prove a negative. You need to prove the bats in Wuhan don't have Covid. More and more bats in Yunnan doesn't do that.