Dave Grohl is desperate for a rebrand. A source says the Foo Fighters frontman has gone from “rock god to scumbag overnight,” in the wake of his admission that he fathered a child outside of his 21-year marriage to Jordyn Blum. “He knows he screwed up. He’s offering up his text messages, constantly apologizing and going to therapy.” The 55-year-old, whose band canceled a big festival appearance in the wake of the scandal, has been focused on repairing his family life, recently accompanying his youngest daughter to shop for Halloween décor. “He has to make this up to his daughters [Violet, 18, Harper, 15, and Ophelia, 10], and he needs to give Jordyn space and time to heal,” says the source. “It’s frustrating for him, but these things take months,…
