Username & password not clear for users signing up with third party services

This issue is based on the feedback received from the follwoing tweet:

Problem

@gitlab FYI nobody knows their username/pass if you signup/signin through third party service. No idea. It is not in the UI. There is nothing about it mentioned. No idea how to push/clone. Just random google searches. Maybe put up a splash at top of settings?

Proposal

Map the current journey of signing up with a third party service and clone/push. Where can we improve? Is there something that we're missing?

Find a way to communicate to the users that sign up with third party service how they can clone/push and what exactly is it that they need.