As per the Canada Revenue Agency (CRA) past year RRSP contributions are not eligible to be used to repay your HBP.
Repaying the amount you withdrew
To make a repayment under the HBP, you have to make contributions to your RRSPs, PRPPs, or SPP in the year the repayment is due or in the first 60 days of the year after. Once your contributions are made, you can designate all or part of the contributions as a repayment.
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