git clone 遇到問題：fatal: unable to access

git clone 遇到問題：fatal: unable to access 'https://github.com/ros-planning/navigation.git/': Failed to connect to 127.0.0.1 port 40491: Connection refusedgit 這是由於克隆地址須要用戶名和密碼登陸纔可使用。github 解決辦法：windows 經過

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