Jeff King [off-list ref] writes:
Yeah, it's fine (as is GIT_ASKPASS=true). You could also provide a
credential helper that gives you an empty username and password. But in
both cases, I think that git will then feed the empty password to the
server again, resulting in an extra useless round-trip.
...
You probably
instead want to say "stop now, git, there is nothing else to be done".
...
We could teach the credential-helper code to do that (e.g., a helper
returns "stop=true" and we respect that). But I think you can do it
reasonably well today by making the input process fail.
Yeah, it is roughly equivalent to the 'ASKPASS=true' approach, and
probably is a good enough solution, I would think.