Comment by chrisweekly

Right, so it's not just git, it's a bunch of system-provided utilities; macOS trusts bad certs, and these utils that trust the OS are affected. I use homebrew for my git and curl but haven't yet checked to confirm whether that matters here. Kind of outrageous that Apple's guidance is to edit the cert chain manually, and to expect that subsequent OS updates may revert your mitigation, reintroducing the vulnerability (as happened at least once so far).