How does it “certainly meet it”? There is no consensus mechanism in git, new blocks are not replicated across the network, there is no network at all, git works offline. You can replicate changes with remotes but there is no “git network” in any similar sense. And conflicts are definitely not resolved automatically. And the git hashes are certainly not cryptographic.

That’s 4 ways it doesn’t meet the definition. You could maybe stretch the meaning of a network to make it 3.