gibberish output after installed in msys2

[MMMMMoris]

• [x] I was not able to find an open or closed issue matching what I'm seeing

Setup

• Which version of Git for Windows are you using? Is it 32-bit or 64-bit?

  $ git --version --build-options
  
  git version 2.45.0.windows.1
  cpu: x86_64
  built from commit: b5d0511969ccd9ab86395c37e5a7619d8b4e7c32
  sizeof-long: 4
  sizeof-size_t: 8
  shell-path: /bin/sh
  feature: fsmonitor--daemon

• Which version of Windows are you running? Vista, 7, 8, 10? Is it 32-bit or 64-bit? Windows 11 x64 23H2

  $ cmd.exe /c ver
  
  Microsoft Windows [Version 10.0.22631.3527]
  (c) Microsoft Corporation. All rights reserved.

• What options did you set as part of the installation? Or did you choose the defaults?

  # One of the following:
  > type "C:\Program Files\Git\etc\install-options.txt"
  > type "C:\Program Files (x86)\Git\etc\install-options.txt"
  > type "%USERPROFILE%\AppData\Local\Programs\Git\etc\install-options.txt"
  > type "$env:USERPROFILE\AppData\Local\Programs\Git\etc\install-options.txt"
  $ cat /etc/install-options.txt

  I didn't use a regular installation method, I installed git-for-windows following this doc.

• Any other interesting things about your environment that might be related to the issue you're seeing?

  Here is $OutputEncoding of my powershell

  Preamble          :
  BodyName          : utf-8
  EncodingName      : Unicode (UTF-8)
  HeaderName        : utf-8
  WebName           : utf-8
  WindowsCodePage   : 1200
  IsBrowserDisplay  : True
  IsBrowserSave     : True
  IsMailNewsDisplay : True
  IsMailNewsSave    : True
  IsSingleByte      : False
  EncoderFallback   : System.Text.EncoderReplacementFallback
  DecoderFallback   : System.Text.DecoderReplacementFallback
  IsReadOnly        : True
  CodePage          : 65001

  And my system locale is Chinese.

Details

• Which terminal/shell are you running Git from? e.g Bash/CMD/PowerShell/other

  PowerShell

• What commands did you run to trigger this issue? If you can provide a Minimal, Complete, and Verifiable example this will help us understand the issue.

  git

• What did you expect to occur after running these commands?

  Normal output from git, no gibberish

• What actually happened instead?

  

• If the problem was occurring with a specific repository, can you provide the URL to that repository to help us with testing?

  I am using the latest version of git install following this doc

[dscho]

• I am using the latest version of git install following this doc

That document literally starts with:

Please note that this scenario is not officially supported by Git for Windows