Alex Gibney's Elon doc isn't even out but Musk is already calling it a 'hit job'

Elon Musk is not excited about a new documentary called "MUSK." Leon Neal/Getty Images There's a new documentary called "MUSK" that's set to hit theaters in October. Elon Musk called it a "hit piece" on X and mocked its 4-hour runtime. "MUSK" was directed by Academy Award-nominated documentary filmmaker Alex Gibney. A new documentary about Elon Musk is set to hit theaters this October, and the world's richest man still isn't thrilled about it. "It's a hit piece," Musk wrote on X on Thursday.…