OSS: Added failsafe based upon Jérémie Andréi patch

See Also:
https://sf.net/tracker/index.php?func=detail&aid=1781574&group_id=62934&atid=502312
(cherry picked from commit 42a066a7d7e3c9631bde7187269acd7e9234ccf6)
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Internal Server Error - Gitea: Git with a cup of tea
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Gitea Version: 1.28.0+dev-477-g8b6ad49a5f