The github.com documentation pages I read on this topic yesterday said the MFA requirement was for web sign-on and https GIT repo URLs. It explicitly said that

The github.com documentation pages I read on this topic yesterday said the MFA requirement was for web sign-on and https GIT repo URLs. It explicitly said that SSH-based git repo access would not be affected. Has anyone seen contradictory statements published by github? Edit to add: I mean SSH git access using a keypair registered with your account. (I don't know if there is some legacy option to use SSH with passwords, which I imagine would be discontinued if not already.)