[PATCH 0/5] work around "transport-take-over" hack

"git fetch" sometimes needs to make a real request to the transport after a single "fetch_refs" request, in order to follow tags that the other end should have sent as part of the primary transfer with "follow-tags" request.

However, a transport that defines "connect" has a gross hack that destroys its internal state to render it unusable after processing a single request, breaking this.

This is my attempt to work it around. I am not too proud of it, but after trying two other approaches to fix it closer to the real cause (i.e. the implementation of Git-aware transport helper) and seeing that both of them ended up being even less appealing and not worth posting, I think this is probably the best fix to the issue.

Junio C Hamano (5):
  t5802: add test for connect helper
  fetch: rename file-scope global "transport" to "gtransport"
  fetch: refactor code that prepares a transport
  fetch: refactor code that fetches leftover tags
  fetch: work around "transport-take-over" hack

 builtin/fetch.c           | 85 ++++++++++++++++++++++++++++++-----------------
 t/t5802-connect-helper.sh | 72 +++++++++++++++++++++++++++++++++++++++
 transport.c               |  2 ++
 transport.h               |  6 ++++
 4 files changed, 134 insertions(+), 31 deletions(-)
 create mode 100755 t/t5802-connect-helper.sh