title: Git warning: refname 'xxx' is ambiguous
body: <p>I have two branches 'master' and 'develop', I create a new branch from master that 'hotfix-1' and then I merge 'hotfix-1' back to master with ;</p>
  
  <pre><code>git checkout master
  git merge --no-ff hotfix-1
  </code></pre>
  
  <p>Created a tag for this point;</p>
  
  <pre><code>git tag -a hotfix-1 -m ""
  </code></pre>
  
  <p>and then I switched back to develop branch from master and merge 'hotfix-1' with ;</p>
  
  <pre><code>git checkout develop
  git merge --no-ff hotfix-1
  </code></pre>
  
  <p>after merging 'hotfix-1' to develop I'm getting <strong>"warning: refname 'hotfix-1' is ambiguous"</strong> message and <strong>it's successfully merging my changes to develop</strong> too.. should I worry about anything ?</p>
  
  <p><strong>Edit</strong></p>
  
  <pre><code>git show-ref --heads --tags
  
  d97bfc563749918799d4659c43f7bffd29cf4d60 refs/heads/develop
  594ea85c94f8321d372779ed3dbd5df07bdb059b refs/heads/master
  ffc897f8ab19510d5ff4c67969d0f0cb97d1c4f3 refs/tags/beta-1.0
  490a8c80ecec70fd2268aa0c2ad7a9beb6bf491c refs/tags/beta-1.1
  644adadb43744ad1d2e0f13fc37abb6906520f8f refs/tags/hotfix-1.0.1
  4c49e8d9ddc8d601ed794f307e1c29acfc84b31b refs/tags/release-1.0
  </code></pre>