Google Webmaster Tools Bulk Fetch as Google Extension

Install from Google Webstore

https://chrome.google.com/webstore/detail/webmaster-tools-bulk-fetc/plafkhdhopmgfgehjcpdjfomjknjpbal

Installation

Download the extension from github and unzip it.
Go to chrome://extensions/ and turn on Develper mode.
Click on Load unpacked extension . . . and load the extension.

Usage

Create a list of urls to be fetched as google in a csv file.

First column: path
Second column: desktop or mobile
Third column: true for FETCH AND RENDER and false for FETCH

Example:

path0,desktop,true
path1,mobile,false

Go to Google's webmaster toolsmaster tools.
Click on Crawl -> Fetch as Google
You should now see a new "Choose File" button.
Click on the Choose File button.
Select the file you created in step 1
When captcha shows up, you'll have to prove to google that you are not a bot. Then, click on continue.