Git bash on windows doesn't prompt in case github authentication is required and commands freeze indefinitely.

[sumanjitsg]

• 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 2.32.0.windows.1
cpu: x86_64
built from commit: 4c204998d0e156d13d81abe1d1963051b1418fc0
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?

$ cmd.exe /c ver

** Microsoft Windows [Version 10.0.19042.1052] **

• 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"
$ cat /etc/install-options.txt

** Editor Option: Notepad++
Custom Editor Path:
Default Branch Option: main
Path Option: Cmd
SSH Option: OpenSSH
Tortoise Option: false
CURL Option: OpenSSL
CRLF Option: CRLFCommitAsIs
Bash Terminal Option: MinTTY
Git Pull Behavior Option: FFOnly
Use Credential Manager: Core
Performance Tweaks FSCache: Enabled
Enable Symlinks: Disabled
Enable Pseudo Console Support: Disabled
Enable FSMonitor: Disabled **

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

** Issue isn't reproducible on Git Windows command line. It prompts for github authentication with two options (web/token). On successful authentication, commands start working on Git Windows and Git Bash as well. **

Details

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

** Bash **

• 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 pull, git push, git pull --rebase origin master **

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

** Expected local branch updates from remote **

• What actually happened instead?

** Commands freeze forever **

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

** insert URL here **

[dscho]

FWIW this strikes me as a problem with Git Credential Manager Core more than with Git, so I would like to suggest following the advice in https://github.com/microsoft/Git-Credential-Manager-Core/blob/main/docs/development.md#collect-trace-output to debug further.

[mjcheetham]

@sumanjitsg can you try setting the following environment variables and re-running one of the commands that hangs?

GIT_TRACE=1
GCM_TRACE=1

For example from Git Bash:

$ GIT_TRACE=1 GCM_TRACE=1 git fetch

Please note that the trace output from GCM_TRACE may contain sensitive information like URLs and usernames. Please consider redacting any information before sharing.

[dscho]

@sumanjitsg just in case you are reading what Matthew and I are writing here: I was able to reproduce the issue and I think you can work around the issue until a full fix is released by calling the command with winpty, e.g. winpty git fetch.

[dscho]

@sumanjitsg please download and install https://github.com/microsoft/Git-Credential-Manager-Core/releases/tag/v2.0.475 to fix this.