On Mon, Dec 4, 2017 at 3:58 PM, Brandon Williams [off-list ref] wrote:

One of the design goals of protocol-v2 is to improve the semantics of
flush packets.  Currently in protocol-v1, flush packets are used both to
indicate a break in a list of packet lines as well as an indication that
one side has finished speaking.  This makes it particularly difficult
to implement proxies as a proxy would need to completely understand git
protocol instead of simply looking for a flush packet.

To do this, introduce the special deliminator packet '0001'.  A delim
packet can then be used as a deliminator between lists of packet lines
while flush packets can be reserved to indicate the end of a response.

Signed-off-by: Brandon Williams <redacted>

I presume the update for Documentation/technical/* comes at a later patch in the
series, clarifying the exact semantic difference between the packet types?