Music producer Rodney “Lil Rod” Jones is accusing Sean “Diddy” Combs and his son of a “massive” cover-up of their involvement in a 2022 shooting, according to an amended complaint. The new allegations add to Jones’ original lawsuit, in which he accuses Diddy of sexual assault and harassment. In new filings, Lil Rod claimed that Diddy or his son Justin shot Justin’s friend, identified in the complaint as a 30-year-old named G, in the abdomen and near his leg or hip area in a bathroom at Chalice Recording Studio in Los Angeles in September 2022. He claims that G has since…