a poor place to do log old..new. The
<a href="#post-receive"><em>post-receive</em></a> hook does get both original and
updated values of the refs. You might consider it instead if you need
them.</p>
</div>
<div class="paragraph">
<p>When enabled, the default <em>post-update</em> hook runs
<code>git update-server-info</code> to keep the information used by dumb
transports (e.g., HTTP) up to date.  If you are publishing
a Git repository that is accessible via HTTP, you should
probably enable this hook.</p>
</