Koji resubmit fails after build failure during result upload

[Kevin Kofler]

This kdelibs4 build:
http://koji.fedoraproject.org/koji/taskinfo?taskID=444504
failed (after all arches succeeded) with:
RetryError: reached maximum number of retries, last call failed with: error: 
(111, 'Connection refused')

Resubmitting:
http://koji.fedoraproject.org/koji/taskinfo?taskID=445113
lead to:
GenericError: Error importing RPM 
file. /mnt/koji/packages/kdelibs4/4.0.1/6.fc7/src/kdelibs4-4.0.1-6.fc7.src.rpm 
already exists.

I bumped Release to 6%{?dist}.1 and submitted a new build as a workaround, but 
it would be nice if this could be handled more gracefully (not to mention that 
the error shouldn't happen in the first place ;-) ).

        Kevin Kofler