Re: [PATCH 3/3] update a few Porcelain-ish for ref lock safety.

Andy Whitcroft [off-list ref] writes:

quoted

+prev=0000000000000000000000000000000000000000

It seems a little odd to need to use such a large 'none' thing.  Will
linus' updates start returning this when there is no tag?  If so then it
makes sense.  Else perhaps it would be nice to have a short cut for it.
 Such as 'none'.

True.  It probably is better to accept something shorter, like
an empty string, or token "none".  But this is a plumbing
command, and I was not too concerned about having to say 40 "0"
in the Porcelain scripts.