go get results in 'terminal prompts disabled'

Question

我使用浏览器中的 Github UI 创建了私有仓库 examplesite/myprivaterepo。

然后我转到我的 go 目录（在桌面上）并克隆它：

$ cd $GOPATH

$ go get github.com/examplesite/myprivaterepo

到现在为止还挺好。创建文件 scheduler.go，添加到 repo 并推送。

$ vim scheduler.go

$ git add scheduler.go

$ git commit

$ git push

一切正常。但是当我找到一台干净的笔记本电脑并尝试克隆 repo 时，出现错误：

# Now on laptop, which doesn't yet know about the repo

$ cd $GOPATH

$ go get github.com/examplesite/myprivaterepo

# At this point it should ask for my user ID and password ,right? But it doesn't.

# Instead, this error occurs:

cd .; git clone https://github.com/examplesite/myprivaterepo /Users/tom/go/src/github.com/examplesite/myprivaterepo

Cloning into '/Users/tom/go/src/github.com/examplesite/myprivaterepo'...

fatal: could not read Username for 'https://github.com': terminal prompts disabled

package github.com/examplesite/myprivaterepo: exit status 128

为什么我的笔记本电脑讨厌我自己的回购，我怎样才能让它接受它的命运？谢谢。