git.txt: document GIT_TRACE_PACKET

"This can help with debugging object negotiation or other protocol
issues."

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git.txt b/Documentation/git.txt
index 3e74440a18db33a65d46d43b5ad7e939710c7b93..3c77b82add1bca5d578d94dd969e22735ab4993f 100644 (file)
--- a/Documentation/git.txt
+++ b/Documentation/git.txt
@@ -839,6 +839,12 @@ for further details.
        recorded. This may be helpful for troubleshooting some
        pack-related performance problems.
 
+'GIT_TRACE_PACKET'::
+       If this variable is set, it shows a trace of all packets
+       coming in or out of a given program. This can help with
+       debugging object negotiation or other protocol issues. Tracing
+       is turned off at a packet starting with "PACK".
+
 GIT_LITERAL_PATHSPECS::
        Setting this variable to `1` will cause Git to treat all
        pathspecs literally, rather than as glob patterns. For example,