Git 使用 Fabric 拉取远程主机

Question

我正在尝试在 fabfile.py 中编写部署脚本。这是我的代码：

from fabric.api import *

env.user = 'user'
env.hosts = ['my_host']
env.dbname = 'foo.bar'
env.dbuser = 'pg_user'
env.dbpass = 'pg_user'
code_dir = '/cygdrive/d/folder'


def deploy():
    with cd(code_dir):
        run('git pull')
        run('pip install -r requirements.txt')
        run('manage.py migrate --all')
        run('net stop Apache2.2')
        run('net start Apache2.2')

当我尝试fab deploy 时，出现错误：

    [my_host] Executing task 'deploy'
    [my_host] run: git pull
    [my_host] out: Host key verification failed.
    [my_host] out:
    [my_host] out: fatal: Could not read from remote repository.
    [my_host] out:
    [my_host] out: Please make sure you have the correct access rights
    [my_host] out: and the repository exists.
    [my_host] out:
Fatal error: run() received nonzero return code 1 while executing!

git pull 命令应该从 bitbucket.org 存储库 (ssh) 中拉取。它被添加到 known_hosts 文件中（之前克隆了 repo）。两台机器都使用Windows。

在远程计算机上从命令行运行 git pull 可以工作，但它不会从 Fabric 部署脚本运行！

有任何想法吗？