Comment # 1 on bug 1174403 from Benjamin Zeller

Could you upload the .repo file of the repository that is not working? 

And also the zypper log for the refresh you were executing:

This will show you all previous zypper runs that are in the log file:
> sudo zypper-log

Will print the log of the previous zypper run with the given PID
> sudo zypper-log <PID>