Is it possible to requiring 2FA on merge on account?

As the title says, on merging a PR is it possible to require a re-authentication through 2FA code + password?

See here for GitHub docs.

It doesn’t seem to do what I wanted (asking 2FA code not only on the login, but on every mege), also I am looking for a repo based solution, not organization wide.

No, that isn’t (currently) possible.