title: what does '-O' option do in 'curl' command of git bash?
body: <p>What will happen if I use a normal word instead of a url with '-O' in 'curl' command?
  e.g. What will happen if I type following command? :</p>
  
  <p>curl -O <a href="https://openhatch.org/missions/diffpatch/diffsingle/nutty-pancake.txt" rel="nofollow">https://openhatch.org/missions/diffpatch/diffsingle/nutty-pancake.txt</a> -O original</p>