e> (shorthand: <code>-m</code>) config option, npm will
use it as a commit message when creating a version commit.  If the
<code>message</code> config contains <code>%s</code> then that will be replaced with the
resulting version number.  For example:</p>
<pre><code>npm version patch -m &quot;Upgrade to %s for reasons&quot;
</code></pre><p>If the <code>sign-git-tag</code> config is set, then the tag will be signed using
the <code>-s</code> flag to git.  Note that you must have a default GPG key set up
in yo