Task:
Clone from a remote repository having ssh://abc@domain.com/git/remote_repo format, which has submodules included from the outside of domain.com.

Problem:
current_repository = git.Repo.clone_from(r"ssh://abc@domain.com/git/remote_repo", r"d:\temp")

the remote_repo has 313 objects (files and folders). Above method call hangs after fetching 294 objects. Total size of remote_repo is 82 MB.

Observations:

1. Command Prompt: "git clone -v ssh://abc@domain.com/git/remote_repo d:\temp" works
2. Git Bash: "git clone -v ssh://abc@domain.com/git/remote_repo d:\temp" works
3. Python interpreter: os.system("git clone -v ssh://abc@domain.com/git/remote_repo d:\temp") works

Possible but incomplete solution:

there is some problem with stderr=PIPE parameter of subprocess.Popen call in execute method of Python27\Lib\site-packages\GitPython-0.3.2.RC1-py2.7.egg\git\cmd.py.

If I change the code to below:

            err_file = open("d:\\err.txt","w")
    # Start the process
    proc = Popen(command,
                    cwd=cwd,
                    stdin=istream,
                    stderr=err_file,
                    #stderr=PIPE,
                    stdout=PIPE,
                    close_fds=(os.name=='posix'),# unsupported on linux
                    **subprocess_kwargs
                    )

The process does not hang.