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You’ll have to go back through the backups. But probably easier to just grab them from the J3.10 branch on GitHub. They weren’t modified as far as I know
Download site (example) of CI/CD packages reference to non existing files on
developer.joomla.org
https://github.com/joomla-projects/docker-images/blob/97af2d9a627d23aab07fac6a62ef9b8a6491d253/templates/index.html#L18-L19