title: 'git pull' command faied:Permission denied
body: <p>Error Message:</p>
  
  <pre><code>error: unable to write file .git/objects/pack/pack-92ef...e9d2.pack: Permission denied
  fatal: cannot store pack file 
  fatal: index-pack failed
  </code></pre>
  
  <p>I tried to delete all the files in the pack folder, but it failed. Still can't submit。</p>
  
  <p>it makes me cannot pull and push.</p>
  
  <p>How to solve it?
  help!</p>