Is it likely SARS-Cov-1 still exists in nature?

As I understand it, coronaviruses are constantly undergoing reassortment in their reservoirs. Could that mean the original SARS is long lost in nature? After years of reassortment?

I wonder if the same is true for SARS-Cov-2 in that we will never find the virus in a reservoir in an identical state to the wuhan isolates but will find genomic pieces of it reasserted into other strains.