_DIR/packed-refs</code> file.
While the ref name encoding is unspecified, UTF-8 is preferred as
some output processing may assume ref names in UTF-8.</p>
</div>
</li>
</ol>
</div>
</dd>
<dt class="hdlist1"><em>@</em></dt>
<dd>
<p><em>@</em> alone is a shortcut for <code>HEAD</code>.</p>
</dd>
<dt class="hdlist1"><em>[&lt;refname&gt;]@{&lt;date&gt;}</em>, e.g. <em>master@{yesterday}</em>, <em>HEAD@{5 minutes ago}</em></dt>
<dd>
<p>A ref followed by the suffix <em>@</em> with a date specification
enclosed in 