Final CARES Act repayment doesn't seem to affect my refund

I took $30k in a CARES act distribution in December of 2020. I paid back $10k before filing in 2021 and another $10k before filing last year. I paid the final 1/3 in December. When I entered it into the 8915 section in TurboTax, it didn't change my refund amount at all (actually, I owe this year, but it's still the same concept, right?). Just to "play" with it a little, I changed the value to a buck, and to $100k, but my "refund" didn't budge a penny. I assume either there's something obvious that I'm missing, or the whole deduction was captured in my 2020 return? Or something else/