*The following steps will clarify how to a get a hactoberfest t-shirt:
Step 1: You should have a GitHub account from which you will make pull requests.
Step 2: Register for Hactoberfest with your github account at their website hactoberfest.digitalocean.com .
Step 3: Make 4 valid pull requests between 1st october and 31st october (keep checking your hactoberfest profile).
Step 4: Your pull request will be under review period for 7 days. if it passes the review period then congrats, you can get a mail from them asking for your address and size to deliver your t-shirt.