How do I enter the interest the IRS paid me with a refund, for which they sent a 1099-INT?

TurboTax's 1099-INT section seems only to want 1099-INT forms that came from banks.  When I tried typing in Department of the Treasury in that section, TT's response was it had not heard of that bank.  It has to be common that the IRS sends interest with refunds, especially when it's for an amended tax return for a previous year.