I right click on empty folder and select Git Clone..., put in the url: https://git-wip-us.apache.org/repos/asf?p=incubator-cordova-android.git;a=tree (is that what I’m supposed to put ?) uncheck the Putty key, and get this:
git.exe clone --progress -v "https://git-wip-us.apache.org/repos/incubator-cordova-android" "C:\work\PhoneGapSrc\incubator-cordova-android"
Cloning into 'C:\work\PhoneGapSrc\incubator-cordova-android'...
fatal: https://git-wip-us.apache.org/repos/incubator-cordova-android/info/refs not found: did you run git update-server-info on the server?
git did not exit cleanly (exit code 128)
The URL is wrong, it is https://git-wip-us.apache.org/repos/asf/incubator-cordova-android.git