There’s a lot of weird hippie cults, including Charles Manson’s. If your hippieism leans towards the aesthetic then it’s perfectly compatible with fascism. Not to mention the weird Californian ideology that isn’t straight fascism but sure is authoritarian in its anti-authoritarianism.

Fascism is by definition syncretic. It eats whatever it finds and makes more of itself, with rigid power structures and might makes right logic. Every large enough movement can have a fascist version of itself.