The very first word uttered in director Trip Cullman’s soulful, devastating new re-imagining of the 1962 musical “I Can Get It For You Wholesale” is a detestable slur that, sadly, has carried particular resonance in recent weeks. The term, which begins with a K and rhymes, ironically, with “like,” is hurled at a boy named Heshie, a menial worker at New York City’s Garment District in the 1920s, as he is beaten and robbed of his meager pay.