Re: [PATCH 3/3] clone: always fetch remote HEAD

Jeff King [off-list ref] writes:

Actually, I forgot that I did consider this when writing the original
patch. The clone code will only ask for HEAD if the remote side
advertises it. So there is no capability required; either the helper
advertises a HEAD ref or it doesn't. If it does, it should be prepared
for us to ask for its sha1.

Sounds very sensible ;-).