title: git push error: not Signed-off-by author/committer/uploader in commit message footer
body: <p>I am working on an issue on my local repository, and I found that this bug was fixed in the kernel.org repository.</p>
  <p>So now I am trying to pull this fix from the kernel.org branch and <code>cherry-pick</code> it to my local gerrit. And I am trying to maintain the commit message of the commit from the kernel.org branch.</p>
  <p>When I try to push this fix on my local gerrit, I face the following error:</p>
  <pre><code>To ssh://&lt;username&gt;@123.321.12.1:1234/mirror-sec/asdfgt/hjks
   ! [remote rejected] &lt;branch&gt; -&gt; refs/for/&lt;branch&gt; (not Signed-off-by author/committer/uploader in commit message footer)
  error: failed to push some refs to 'ssh://&lt;username&gt;@123.321.12.1:1234/mirror-sec/asdfgt/hjks'
  </code></pre>
  <p>Following are the steps that I followed:</p>
  <ol>
  <li>Runned <code>git remote add 'tag' git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux</code></li>
  <li>Runned <code>git fetch 'tag'</code></li>
  <li>Searched for the commit in <code>git log 'tag'/master</code></li>
  <li>cherry-picked the specific commit-id needed: <code>git cherry-pick &lt;commit-id&gt;</code></li>
  <li>Runned <code>git commit --amend</code>, to get a new change-id for the cherry-picked commit-id</li>
  <li>Funned <code>git push</code> to submit the change to the local gerrit: <code>git push ssh://&lt;username&gt;@123.321.12.1:1234/mirror-sec/asdfgt/hjks &lt;branch&gt;:refs/for/&lt;branch&gt;</code></li>
  </ol>
  <p>When I followed the above steps, I face the error mentioned above.</p>
  <p>Is there anything that I am doing wrong? Any information that I am overlooking would help a lot.</p>
  <p>Thanks.</p>