The Catechism:1269. How does the Mass re-present Calvary?
The Mass re-presents Calvary by continuing Christ’s sacrifice of himself to his heavenly Father. In the Mass, no less than on Calvary, Jesus really offers his life to his heavenly Father.
No re-sacrifice but re-present. No bloody sacrifice. It was 'one oblation of Himself once offered'. That sacrifice is for all eternity.
But this is off-topic
It re-presents Calvary
by continuing Christ's sacrifice
In the mass....Jesus really offers his life to the Father
Jesus is sacrificed over and over and over and over again. That is fact.