为克隆的存储库安装requirements.txt时出现错误消息

Question

我克隆了一个存储库，并试图像这样安装require.txt：

$ git clone https://github.com/developmentseed/pillbox-engine.git
$ cd pillbox-engine
$ pip install -r requirements.txt

但是我遇到以下错误：

ERROR: Command errored out with exit status 128: git clone -q git://github.com/scisco/dj-database-url.git /private/var/folders/95/txp8yg_x07n2t_r6t4mgrycw0000gn/T/pip-req-build-x_7ghqug Check the logs for full command output.

我已对此进行了调查，无法找出原因。