However, the evidence is pretty clear that this was found and published earlier. It was originally described as "BtCoV/4991" and it was described and published as far as I can find as far back as 2016. (The name was changed to RaTG13 to describe that it was collected in 2013 in Tongguan).
https://www.ncbi.nlm.nih.gov/nuccore/983856042 <-- partial RaTG13 sequence in 2016