on deepen-since</em> &lt;timestamp&gt;</dt>
<dd>
<p>Deepens the history of a shallow repository based on time.</p>
</dd>
<dt class="hdlist1"><em>option deepen-not</em> &lt;ref&gt;</dt>
<dd>
<p>Deepens the history of a shallow repository excluding ref.
Multiple options add up.</p>
</dd>
<dt class="hdlist1"><em>option deepen-relative</em> {<em>true</em>|<em>false</em>}</dt>
<dd>
<p>Deepens the history of a shallow repository relative to
current boundary. Only valid when used with "option depth".</p>
</dd>
<dt