[PATCH 0/3] Push negotiation fixes

Testing at $DAYJOB revealed some bugs in some fundamental scenarios, and here are their fixes.

Jonathan Tan (3):
  send-pack: fix push.negotiate with remote helper
  send-pack: fix push nego. when remote has refs
  fetch: die on invalid --negotiation-tip hash

 builtin/fetch.c       |  4 +++-
 builtin/send-pack.c   |  1 +
 send-pack.c           |  6 +++--
 t/t5510-fetch.sh      |  9 ++++++++
 t/t5516-fetch-push.sh | 54 +++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 71 insertions(+), 3 deletions(-)