Use unabbreviated git SHA1 for buildid

[Lior Kaplan]

On Mon, Nov 26, 2012 at 4:05 PM, Stephan Bergmann <sbergman at redhat.com>wrote:

> On 11/26/2012 01:00 PM, Lior Kaplan wrote:
>
>> I'd like to raise the question why do we need the full SHA1 for as the
>> build ID?
>> (See
>> http://cgit.freedesktop.org/**libreoffice/core/commit/?id=**
>> b7e6c8459b15a4fdb9ebb269b27cde**ea82c8c5c2<http://cgit.freedesktop.org/libreoffice/core/commit/?id=b7e6c8459b15a4fdb9ebb269b27cdeea82c8c5c2>
>> )
>>
>> Using the abbreviated version looks weird enough for users, and I think
>> the full version won't add anything.
>> Technically they are the same (correct me if I'm wrong).
>>
>
> The abbreviated form is much more prone for collision than the
> unabbreviated one, and the core git repo indeed already has at least one
> collision of abbreviated SHA1s.  Try "git show 349fa28a".
>

Thanks, although I couldn't find the other commit (the first is
349fa28a5998d10b110da1a7fcc6b5b24d5940b1)

Kaplan
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