Philadelphia-based indie rocker Mallory Hawk used to lead the Brooklyn punk band Customer, and she’s played in groups like Trace Mountains and M(h)aol. Later this summer, Hawk will release Chinook, her first solo album, and it’s a record worth getting excited about. We’ve already posted her early single “Felicity” and “Revolver.” Today, she shares “Caretaker,” a new song that doesn’t …