cursed
See, Genesis 12:3; Genesis 15:18; Genesis 15:18 See note 3,(5), (See Scofield "Genesis 15:18") .

and Esau
Esau wept because of a lost advantage, but "found no way to change his mind, though he sought it carefully with tears" Hebrews 12:17 so far may regret or remorse be from true repentance:

life Genesis 26:34; Genesis 26:35.
Heth was ancestor of the Hittites.