On an interview with Noisey for his documentary, Keith Ape elaborated the meaning behind “It G Ma”,

“It G Ma” is something JayAllDay used to say to us The Cohort all the time as a joke. It’s like a buzzword between us. Every time we said bye to each other. It’s an inside-slang that became our greeting. I made the song, it simply asks to not forget us and says that we will succeed and make a lot of money.

OG Maco accused Keith Ape of plagiarism and cultural appropriation. The hook of “It G Ma” is indeed similar to that of Maco’s “U Guessed It”.
Maco has since said to have gotten royalties off this song.

This controversy might have been beneficial to Keith too as it gave him more exposure. He even got some notorious US rappers to hop on a remix!