Do I need to input how much I paid to the Government in Covid19 benefits that I'm repaying them?

Yes, you get a deduction for it! If your repayment is not already entered on a T4E or a T4A slip, you can enter it on Line 23200 – Other deductions. To do this in TurboTax Online, go to your return’s home page (click the house icon ⌂ in the top left menu) and then search for “Other Deductions”.