Non-existing commit found from search engine

I have an issue with gitlab commits… My goal is was to delete unused repo, but it’s still possible to find via search engine invalid links to gitlab commit pages, where google saves the metadata containing the message. I tried google search requests for removal, but they were denied… I also contacted our system administrator, who basically told me that data was deleted, and it’s ok from his side…
Could you give me an advice how to approach this issue?

I wrote submission to google forums, basically got told, that there’s still content on the website