Merge branch 'jt/transfer-fsck-across-packs-fix'

The code to fsck objects received across multiple packs during a
single git fetch session has been broken when the packfile URI
feature was in use.  A workaround has been added by disabling the
codepath to avoid keeping a packfile that is too small.

* jt/transfer-fsck-across-packs-fix:
  fetch-pack: do not mix --pack_header and packfile uri

diff --cc fetch-pack.c
Simple merge

diff --cc t/t5702-protocol-v2.sh
Simple merge