Green’s Dictionary of Slang

git-go n.

In phrases

from the git-go (adv.) (also from the get, from the get-go, from the git, since the...) [SE get going]

(orig. US black) from the very start, from the beginning.

[US]Pittsburgh Courier 19 May 19: [ProQuest] ‘Open Mike,’ the newest trade sheet and first one for the nation’s tan deejays. A clicker from the get-go, the sheet has become must reading for every deejay who sees it.
[US]H. Rap Brown Die Nigger Die! 45: He pissed me off from the get.
[US]O. Hawkins Ghetto Sketches 170: Everybody should be made to understand one thing, from the git-go . . . there will be no bullshit!
[US]E. Torres Carlito’s Way 100: He was bad news from the get-go. [Ibid.] 154: From the get-go let me tell you I’m against dope.
[US]J.L. Gwaltney Drylongso 233: I know I’m wrong from the git.
[US]S. King It (1987) 935: Available horsepower of 255, able to hit seventy from the git-go in just about nine seconds.
[US]D. Woodrell Muscle for the Wing 163: They were in charge from the get-go.
[US]R. Price Clockers 527: Something that he had to know from the git-go would deny him access to his wife and children.
[US]N. McCall Makes Me Wanna Holler (1995) 265: I knew from the get-go that the crossover [...] would be very risky.
[US]T. Fontana ‘Capital P’ Oz ser. 1 ep. 4 [TV script] I fucked this up from the get-ready.
[UK]Guardian Rev. 14 Jan. 23: Magnolia has been pushed as a prestige production since the get-go.
[US]‘Touré’ Portable Promised Land (ms.) 40: From the gitgo Sugar Lips was scorchin through solo after solo.
[UK]L. Theroux Call of the Weird (2006) 150: They’d be suspicious from the get-go.
[US]F.X. Toole Pound for Pound 266: He explained a six-fight deal that was bogus from the git.
[US]J. Ellroy Hilliker Curse 3: I was a watcher at the get-go.
[Aus]J.J. DeCeglie Drawing Dead [ebook] It was a set-up [...] right from the get-go [...] the broad was double-dealing.
[UK]K. Koke ‘Mama’ [lyrics] Mum, I’mma tell you from the get-go, I ain’t never gonna let go.