Git cache makes builds fail

Our git repository seems to be cached way too aggressively. I’ve been debugging a failing build for some time now. When SSHing into the server, removing the old repo and cloning a clean version, the build runs. Rebuilding without cache doesn’t work.

Here: I get told that “Control of this cache isn’t user accessible and shouldn’t need to be.”. I disagree, certainly when bugs like this can happen.

Is it possible for you guys to clean our cache? For the most recent failed build: