Can't yarn install latest master with https url

[sudara]

Hi there! I'm excited by this project and wanted to test a bug I was having on beta 7 with latest master.

Yarn seems to not actually grab code when fed the https url. Perhaps it's a known issue, but I wanted to mention it, looks possibly related to yarnpkg/yarn#2822

3. Reproduction

yarn install https://github.com/Shopify/draggable
or
yarn install git+https://github.com/Shopify/draggable

Both end up with only the following files in node_modules:

➜  alonetone git:(master) ✗ ls node_modules/@shopify/draggable/
CHANGELOG.md LICENSE.md   README.md    package.json

4. Please tell us about your environment:

latest master
yarn 1.9.4
node v8.11.3
macOS 10.14