git-cat-file "Not a valid object name"

[Reza Roboubi <reza@xxxxxxxxxxxxxxxx>]

git-cat-file -t 9b22b50f814b22224d6f838433f1e9cd36bfc2

says: "Not a valid object name".

So what is this thing in my .git:
../.git/objects/92/9b22b50f814b22224d6f838433f1e9cd36bfc2

Thanks in advance.

Reza.
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