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Date:   Tue, 22 May 2018 21:48:54 +0200
From:   Andreas Krey <a.krey@gmx.de>
To:     git <git@vger.kernel.org>
Subject: bug: --shallow-since misbehaves on old branch heads
Message-ID: <20180522194854.GA29564@inner.h.apk.li>
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Hi everybody,

I think I have discovered a problem with clone/fetch --shallow-since:
When a ref that is fetches has a head that is already older than
the 'since' time, then the entire branch is fetched, instead of
just the current commit.

Repro:

  rm -rf tmp out deep
  git init tmp
  for i in `seq 10 31`; do
      d="2017-05-${i}T12:00"
      GIT_AUTOR_DATE="$d" GIT_COMMITTER_DATE="$d" git -C tmp commit -m nix$i --allow-empty
  done
  git -C tmp checkout -b test HEAD^^^
  for i in `seq 10 14`; do
      d="2017-06-${i}T12:00"
      GIT_AUTHOR_DATE="$d" GIT_COMMITTER_DATE="$d" git -C tmp commit -m nax$i --allow-empty
  done
  for i in `seq 1 4`; do
      git -C tmp commit -m new$i --allow-empty
  done

  echo "** This is fine:"

  git clone --shallow-since '1 month ago' file://`pwd`/tmp out --branch test
  git -C out log --oneline

  echo "** This should show one commit but shows all:"

  git clone --shallow-since '1 month ago' file://`pwd`/tmp deep --branch master
  git -C deep log --oneline

Do I expect the wrong thing?

- Andreas


-- 
"Totally trivial. Famous last words."
From: Linus Torvalds <torvalds@*.org>
Date: Fri, 22 Jan 2010 07:29:21 -0800