title: Trigger a Jenkins pipeline by tagging an existing commit
body: <p><strong>Description</strong></p>
  
  <p>I have Jenkins (2.126) set up to build a pipeline when a new tag is pushed. Specifically, I want to tag an existing commit on <code>master</code> as <code>release-3</code> and have it trigger a build. According to several sources, what I want is possible:</p>
  
  <p><a href="https://mohamicorp.atlassian.net/wiki/spaces/DOC/pages/136740885/Triggering+Jenkins+Based+on+New+Tags" rel="noreferrer">https://mohamicorp.atlassian.net/wiki/spaces/DOC/pages/136740885/Triggering+Jenkins+Based+on+New+Tags</a></p>
  
  <p>Unfortunately, nothing happens when I tag an existing commit and push it to the Git repository. Other builds (triggered by branches) work as expected, and the tag-triggered build in question completes successfully when started manually. </p>
  
  <p>According to some, tag-triggered pipelines should work since version 2.3. Is there anything I can configure to make it work?</p>
  
  <p><strong>Screenshots of attempts</strong></p>
  
  <p>Attempt with a normal pipeline polling at <code>* * * * *</code>:</p>
  
  <p><a href="https://i.stack.imgur.com/Q9nsW.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Q9nsW.png" alt="enter image description here"></a></p>
  
  <p>Attempt with a multibranch pipeline, scanning every <code>1 minute</code>:</p>
  
  <p><a href="https://i.stack.imgur.com/BDhxS.png" rel="noreferrer"><img src="https://i.stack.imgur.com/BDhxS.png" alt="enter image description here"></a></p>
  
  <p><strong>Related issues</strong></p>
  
  <p>I found the following issues related to the problem, which is supposed to be resolved.</p>
  
  <ul>
  <li><a href="https://issues.jenkins-ci.org/browse/JENKINS-38921" rel="noreferrer">https://issues.jenkins-ci.org/browse/JENKINS-38921</a></li>
  <li><a href="https://issues.jenkins-ci.org/browse/JENKINS-34176" rel="noreferrer">https://issues.jenkins-ci.org/browse/JENKINS-34176</a></li>
  <li><a href="https://issues.jenkins-ci.org/browse/JENKINS-14917" rel="noreferrer">https://issues.jenkins-ci.org/browse/JENKINS-14917</a></li>
  <li><a href="https://issues.jenkins-ci.org/browse/JENKINS-47077" rel="noreferrer">https://issues.jenkins-ci.org/browse/JENKINS-47077</a></li>
  <li><a href="https://issues.jenkins-ci.org/browse/JENKINS-47891" rel="noreferrer">https://issues.jenkins-ci.org/browse/JENKINS-47891</a></li>
  <li><a href="https://issues.jenkins-ci.org/browse/JENKINS-52376" rel="noreferrer">https://issues.jenkins-ci.org/browse/JENKINS-52376</a></li>
  </ul>