[PATCH v3 0/2] connected: fix the connectivity check with alternates in deepening fetches

[Igor Wiedler <iwiedler@gitlab.com>]

In a deepening fetch the connectivity check passes "--alternate-refs"
as a positive revision and walks the alternate's whole history. With a
7M-object alternate that takes 227s after a fetch of an empty pack.

Changes since v2:

 * The shallow alternate test wrote $TRASH_DIRECTORY into
   objects/info/alternates, which git on Windows cannot resolve. It now
   uses Peff's version with $(pwd) and relative paths.

 * The trace tests use $(pwd) instead of $PWD.

No code changes.

v2: https://lore.kernel.org/git/20261014181134.56220-1-iwiedler@gitlab.com/
v1: https://lore.kernel.org/git/20261014103507.35317-1-iwiedler@gitlab.com/

Igor Wiedler (2):
  connected: negate alternate refs in deepening fetches too
  odb: ignore refs of shallow and grafted alternates

 Documentation/rev-list-options.adoc |  7 ++++---
 connected.c                         |  6 ++++--
 odb.c                               | 11 +++++++++++
 t/t5618-alternate-refs.sh           | 25 +++++++++++++++++++++++++
 4 files changed, 44 insertions(+), 5 deletions(-)


base-commit: 6de20f6092dcf9bdb1c8efe03db4b70c82b423dd
-- 
2.56.0