Bash ssh "hostname contains invalid characters"

[user9436]

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

I'm having problems using Git Bash git over ssh with a domain\user username.

Setup

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

64

$ git --version --build-options

git version 2.47.0.windows.2
cpu: x86_64
built from commit: 1f8a83cba6e88fad4b881885e64cfb89458e3653
sizeof-long: 4
sizeof-size_t: 8
shell-path: D:/git-sdk-64-build-installers/usr/bin/sh
feature: fsmonitor--daemon
libcurl: 8.10.1
OpenSSL: OpenSSL 3.2.3 3 Sep 2024
zlib: 1.3.1

• 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 10.0.22631.4317]
(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

Editor Option: VIM
Custom Editor Path:
Default Branch Option:
Path Option: Cmd
SSH Option: OpenSSH
Tortoise Option: false
CURL Option: WinSSL
CRLF Option: CRLFAlways
Bash Terminal Option: ConHost
Git Pull Behavior Option: Merge
Use Credential Manager: Enabled
Performance Tweaks FSCache: Enabled
Enable Symlinks: Enabled
Enable FSMonitor: Disabled

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

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 clone domain\\user@gitserver:/srv/git/Repo.git

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

Repo cloned.

• What actually happened instead?

Cloning into 'Repo'...
hostname contains invalid characters
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

This works in CMD and PowerShell.

This results in same error:
git clone 'domain\user@gitserver:/srv/git/Repo.git'

This results in invalid domain\username:
git clone domain\user@gitserver:/srv/git/Repo.git

Like

$ ssh -i ~/.ssh/ssh_key domain\user@gitserver
(domainuser@gitserver) Password:

No backslash in domainuser.

This works:

$ ssh -i ~/.ssh/ssh_key domain\\user@gitserver

' ' or \\ should work with clone.

If I on cloned repo do

$ git remote set-url origin 'domain\user@gitserver:/srv/git/Repo.git'

the /srv part expands to C:\Program Files\Git\srv:

$ git remote -v
origin  domain\user@gitserver;C:\Program Files\Git\srv\git\Repo.git (fetch)
origin  domain\user@gitserver;C:\Program Files\Git\srv\git\Repo.git (push)

Both with ' ' and \\

Which results in:

$ git pull
hostname contains invalid characters
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

Maybe the same happens with clone.

[Vital100500]

try to update Git

Invoke-WebRequest -Uri "https://github.com/git-for-windows/git/releases/download/v2.47.0.windows.2/Git-2.47.0.2-64-bit.exe" -OutFile "$(SYSTEM.DEFAULTWORKINGDIRECTORY)/git-for-windows.exe"
Start-Process -Filepath "$(SYSTEM.DEFAULTWORKINGDIRECTORY)/git-for-windows.exe" -ArgumentList @("/VERYSILENT","/NORESTART","/NOCANCEL","/SP-","/CLOSEAPPLICATIONS","/RESTARTAPPLICATIONS","/o:PathOption=CmdTools","/o:BashTerminalOption=ConHost","/o:EnableSymlinks=Enabled","/COMPONENTS=gitlfs") -NoNewWindow -Wait

[user9436]

I already have 2.47.0.windows.2, see above.