From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Riesen <raa.lkml@gmail.com>
Subject: Re: "git log -- SHA-1" - how to get/simulate this functionality?
Date: Mon, 26 Apr 2010 20:08:09 +0200
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To: Eugene Sajine <euguess@gmail.com>
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On Mon, Apr 26, 2010 at 19:56, Eugene Sajine <euguess@gmail.com> wrote:
> On Mon, Apr 26, 2010 at 1:54 PM, Eugene Sajine <euguess@gmail.com> wrote:
>> Hi,
>>
>> I'm wondering if there is a way to get some repo information if the
>> only thing i know is SHA-1 (no full path to the file)
>
> I mean of course the SHA-1 of the blob, i.e. the result of git
> hash-object some_file

Try 'git cat-file -t <sha>'. It prints what object type is under the hash.
Than you can use either 'git cat-file <type> <sha>' (the most precise version,
which shall fail if anything is wrong), 'git cat-file -p <sha>' or plain
'git show <sha>' (which always works, unless repo's broken).