As far as I'm aware, there's no direct link between a changeset and a bug/ticket. A critical feature IMO is providing such a link. I realise this could be raised against the versioncontrol_svn module as well but I thought I would start here.
This feature would facilitate implementing code reviews e.g.
Fixed
1.0
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.