Clone through proxy

[Amnesthesia]

Your environment

• Git 2.18.4
• ruby-git 1.7.0
• ruby 2.6.0

Steps to reproduce

No option to set proxy, setting ENV["HTTP_PROXY"] doesn't help, and .config options seem to not be possible to set before cloning

Expected behaviour

Would love to be able to pass a proxy: "" option to .clone

Actual behaviour

execution expired

[sbernhard]

Workaround:

    git = Git.init(dir)
    git.config('http.proxy', proxy_setting)
    git.add_remote('origin', git_url)
    git.fetch
    git.checkout(git_commit)

[stale]

A friendly reminder that this issue had no activity for 60 days.