Re: File info from SHA ID

> 
> On Thu, 3 Apr 2008, Christoph Duelli wrote:
>> Given (only) a SHA ID (say from a file's $ID$ expansion), is it possible to
>> determine the file's name, date of commit etc?
> 
> Not directly, no.
> 
> But you can get it indirectly with a number of variations on
> 
> 	git whatchanged --raw --no-abbrev
> 
> and then just searching for that SHA1 ID in the result. That will also 
> show you where in the history that SHA1 came to be or went away.
> 
> The SHA1 itself is _purely_ about the actual contents of the file, so it 
> has no bearing on where that file actually exists, and two identical files 
> in different places will have the same SHA1. So no SHA1 -> filename 
> mapping can exist, but you can figure out where in the tree or history it 
> existed if you just have the full repository.