Brody Jenner Wants to Meet GF Josie Canseco's Dad, Let's Hit the Cages!

Things must be getting serious with GF Josie Canseco ... 'cause Brody Jenner tells TMZ Sports he wants to meet her daddy, Jose ... and even hit some dingers with him!!! Jenner's been dating the ex-MLB slugger's daughter for the past few months…