From a UX perspective, I don't think anyone in your target audience would have a problem with the fact that it takes a little time to pull the repo. I'd just ad

From a UX perspective, I don't think anyone in your target audience would have a problem with the fact that it takes a little time to pull the repo. I'd just add a small badge that says something along the line of "Give us just a minute, we're still synchronizing your repositories." If the sync time is suitably short, you could even autorefresh every few seconds. Check out CloudFlare - they do a great job with this exact situation in their record import screen.