title: How do I convince Xcode and Git that my Asset Catalog has been updated?
body: <p>After adding new image sets and images to my asset catalog, Xcode doesn't seem to think it needs committing to Git.</p>
  
  <p><img src="https://i.stack.imgur.com/1fgJ9.png" alt="No M flag"></p>
  
  <p>Occasionally it'll notice the change if I quit Xcode and restart it, but that seems a little unreliable.</p>
  
  <p>Or am I missing something obvious?</p>
  
  <p><strong>UPDATE:</strong> The 'M' has appeared! It seems performing a <code>git pull</code> has made it realise there's been a local change (?!).</p>
  
  <p>I've cured the symptom, but can anyone explain the root cause?</p>
  
  <p><img src="https://i.stack.imgur.com/p4fIh.png" alt="enter image description here"></p>