Auth needed "git" repository pull slow

[delijati]

There is problem with auth needed repositories, it seems that after sending username and password the pull request takes very long. As i figured out thats because reading from stderr produces that delay.

This seems not a mr.developer bug but it cold be fixed there and maybe someone is having the same error with some other vcs.

Steps to reproduce:

1. Private repo bitbucket or a self hosted with rhodecode with auth needed
2. Clone repo
3. Run time git pull 2>&1 | tee it should take much longer that time git pull or run the example code from this gist [1]. The output form the gist [2]

As you can see if we use tempfile the problem is solved.

So i would propose to change the code to use tempfile insted of suprocess.PIPE. Just as remark i also tried setting O_NONBLOCK flag. [3]

Use versions:

• Python: Python 3.4.2
• Git: git version 2.1.0
• OS: Ubuntu 14.10

[1] https://gist.github.com/delijati/e1ff03c3ad40dfe225ba
[2] https://gist.github.com/delijati/10d78d4f4f681851603d
[3] http://eyalarubas.com/python-subproc-nonblock.html