οὐ γὰρ ἂν τό γε πραχθὲν ἀγένητον θείη → since he cannot make what was done as though it had not come to pass
acc. neutre ou masc. de ἑός.
(σϝός, cf. suus), gen. ἑοῦ, ἑοῖο, ἑῆς: his, her, own; seldom w. art., Il. 23.295, Il. 10.256; strengthened by gen. of αὐτός, ἑοὶ αὐτοῦ θῆτες, his own, Od. 4.643.