I get this error message after clicking button [Fetch Data] using Joomla 3.5.0 beta:

Processing data from GitHub
Error inserting pull request data into the database: Unknown column 'sha' in 'field list' SQL=INSERT INTO #__patchtester_pulls (pull_id,title,description,pull_url,sha) VALUES (8619,'Improvements for secure registration and login','Assume the following setup:\r\n* the webserver can be reached via HTTP and HTTPS\r\n* the backend is...','joomla/joomla-cms#8619'),

(pasting just a part of the error message)