This is what triggered the Lab Leak hypothesis just the same, a segment of HIV is in the COVID virus itself. No one can explain how it got there short of laboratory manipulation.
Trying to find the link.. this was reported in April-May 2020 and then hushed. You can find lots of fact checks against this.. but the origin was biotech expert who had reviewed the gene sequence and said, this doesn’t belong here no matter what story you come up with to explain the rest.