David Symonds [off-list ref] writes:
Is there consensus on "Git" being the standard capitalisation, versus
"GIT"?
I am not a consensus, but from day 1, Linus talked about "git" (all
lowercase) and "Git" was used only when it came at the beginning of a
sentence (an usual English capitalization rule) or in a section or book
title where all words (except prepositions such as "in", "on") are
capitalized, and I try to mimick it myself for consistency.
As a corollary, unless I spell all the other words in capital to SHOUT, I
never write GIT.