Apparently there’s a will from Rabi Nachman telling his chasidim to come to him for Rosh Hashana
He supposedly said that he promises to personally pull anybody who davens by his kever in Uman on Rosh Hashono out of Gehenom by their peyos.
Last week, somebody asked R’ Avraham Gurvitz shlit”a if he should go – it’s worth it! R’ Avraham replied a) he doubts that R’ Nachman ever said such a thing until he sees documentation of it [and it didn’t sound like he was planning on looking!] b) his father R’ Leib Gurvitz zt”l used to tell Bochurim “What, didn’t you know they shave your peyos off on the way in?”