Fix references to cgit id=

Review Request #3930 — Created March 5, 2013 and submitted — Latest diff uploaded

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master

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Fix references to cgit id=

id2= is actually for SHA-2 hashes, which standard git installations
do not provide.

See https://fedorahosted.org/fedora-infrastructure/ticket/3687 for
additional details.
Switching a malfunctioning repo configuration from id2= to id= resolved the issues described in https://fedorahosted.org/fedora-infrastructure/ticket/3687