

Odd. I just tried
and got
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I’m clearly not on the same setup as you are, but my off-the-cuff guess is that your curl command was issued from a system that cloudflare already recognized (IP whitelist, cookies, I dunno).
Anyways, I’m reading through this blog post on using cURL with cloudflare-protected sites and I’m finding it interesting.
What the other person said. You don’t need fancy yeast or bottles, either. I did it with 2 liter soda bottles and bread yeast, back in college.