Bailly
ὅσ·γε, ἥ·γε, ὅ·γε, v. ὅς.
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LSJ
ἥγε, ὅγε, (< ὅς, γε) who or which, with emphasis, τό γε μάλιστα ἐν τιμῇ ἄγονται Hdt. 2.83, cf. 111, etc. ; τῇ γέ μοι φαίνεται εἶναι ἀληθές Id. 7.139. mostly, like Lat. qui quidem or quippe qui, οἵ γε… ὑπῆρξαν ἄδικα ποιεῦντες since it was they who…, ib. 8. β’ (cf. ὅς B. 1.1); ἀνδρῶν [σὲ] πρῶτον… κρίνοντες…, ὅς γ’ ἐξέλυσας since it was thou who…, S. OT 35, cf. 342, 853, OC 427, etc. — Never in Hom.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)