We have a relatively large git repository (that is, the .git folder); we have been trying, unsuccessfully, to reduce its size, by obliterating files not needed any more in history, but the size didn't change significantly.
We have GCed the repository before the obliteration attempts.
Is there a way to gather statistics about a git repository, so that it's possible to understand what one can obliterate in order to save space, or, more generally, what approach to take respect to such objective?
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After several tests, I've found that I wasn't successfully saving space on the local repository because the general procedures unlink the blobs, but don't necessarily remove them - I've found the solution to this specific problem here: git: can't find blob - want to get rid of it from pack