Upvote:2
The simple answer is that God does things outside of our human comprehension. Jesus was 100% God and 100% man, at the same time. He was not split. He was not 50% God and 50% man. Because of that, he was not imparted original sin. Without original sin, Jesus could not be totally depraved.
How was he not imparted original sin? Like I said, it's outside of our human comprehension. But, we know he had no sin because of passages like:
For He made Him who knew no sin to be sin for us, that we might become the righteousness of God in Him. (2 Cor. 5:21, NKJV)
And you know that He was manifested to take away our sins, and in Him there is no sin. (1 John 3:5)
So, Jesus was not imparted original sin by the direct and miraculous actions of God.