bug report: pre-commit & pre-push hook output is redirected differently

From: Adam Zethraeus <adam.zethraeus@includedhealth.com>
Date: Jul 6, 2022, 20:40 UTC
Message-ID: <CAP4e5TNdvE1gmt9bERT5sL+D3r4Fbypk57KJJ+wYHD=M=T+uWA@mail.gmail.com>

What did you do before the bug happened? (Steps to reproduce your issue)

Installed identical pre-commit and pre-push hooks:

``` #!/bin/bash

>&1 echo "stdout"
>&2 echo "stderr"

exit 1 ```

What did you expect to happen? (Expected behavior)

`git push` and `git commit` should have the same hook behavior.

What happened instead? (Actual behavior)

The pre-commit hook was run with stdout redirected to stderr but the pre-push hook's output was unaltered.

```

> git commit -m "-" 1>/dev/null

stdout stderr

> git commit -m "-" 2>/dev/null
> git commit -m "-" --no-verify
> git push 1>/dev/null

stderr error: failed to push some refs to 'github.com:org/repo.git'

> git push 2>/dev/null

stdout ```

What's different between what you expected and what actually happened?

There was inconsistency in the behavior when I expected consistency.

Anything else you want to add:

```

> /bin/bash --version

GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin21) ```

Please review the rest of the bug report below. You can delete any lines you don't wish to share.

[System Info] git version: git version 2.37.0 cpu: x86_64 no commit associated with this build sizeof-long: 8 sizeof-size_t: 8 shell-path: /bin/sh feature: fsmonitor--daemon uname: Darwin 21.5.0 Darwin Kernel Version 21.5.0: Tue Apr 26 21:08:22 PDT 2022; root:xnu-8020.121.3~4/RELEASE_X86_64 x86_64 compiler info: clang: 13.1.6 (clang-1316.0.21.2.5) libc info: no libc information available $SHELL (typically, interactive shell): /bin/zsh

[Enabled Hooks] pre-commit pre-push