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Who knows, but from those comments:

> Really hard to take anything you say seriously when you use the entire aplhabet for your hexadecimal SHA1 examples.

Touche.

I like those hashes. Why don't we use the entire alphabet. Base64 would be cool.

Way harder to remember a hash using base64. Hex is much more manageable and you still only need to remember 4-5 digits usually.

If it is about memory, why not generate 4 or so words as the 'visual' hash, which is probably good enough for most teams to use for branching/merging without experiencing clashes.

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