GPG signed commits incorrectly listed as invalid

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• Gitea version (or commit ref): master
• Git version:
• Operating system: linux

Description

Go-Git incorrectly reads dates on which could be within the local timezone. An example being that a commit with date:

1579639200 +0100

Within the UK will be incorrectly parsed and re-represented as:

1579639200 +0000

A fix has been pushed to go-git as src-d/go-git#1291

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A likely workaround would be to run your server in the UTC TZ.