Re: sha-1 mismatch using command line sha1sum

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On 16/01/07, Andy Parkins <andyparkins@xxxxxxxxx> wrote:
Hello,

I came across this message:

http://www.gelato.unsw.edu.au/archives/git/0504/0212.html

So I thought, "hey that's interesting, I'll try it".  I was surprised to find
this:

$ sha1sum .git/objects/f4/b6c6b90fdce12d69e4ad80ff6082405ec8cfb8
ac4c6f1d36d6e0341486789b32f86ae6f506df35  .git/objects/f4/b6c6b90fdce12d69e4ad80ff6082405ec8cfb8

This is in the latest git repository.

Is this correct, or should we all begin screaming and crying that our
repositories are woefully corrupt? :-)

That changed some time ago. From the git(7) manpage:

"It's worth noting that the SHA1 hash that is used to name the object
is the hash of the original data plus this header, so sha1sum file
does not match the object name for file. (Historical note: in the dawn
of the age of git the hash was the sha1 of the compressed object.)"

Cheers,
Baz
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