Acts 10:13 Then a voice told him, “Get up, Peter. Kill and eat.”
14 “Surely not, Lord!” Peter replied. “I have never eaten anything impure or unclean.”
15 The voice spoke to him a second time, “Do not call anything impure that God has made clean.”
16 This happened three times, and immediately the sheet was taken back to heaven.
That adds nothing to Peter’s explanation in Acts 10:28, where he explains exactly what (or rather whom) God has cleansed instead of saying that God had cleansed the animals shown in the vision.
Acts 11:18 affirms this; the cleansing was upon the Gentiles.