d robust system to do the same thing.</p>
</div>
</dd>
<dt class="hdlist1"><a id="def_hash"></a>hash</dt>
<dd>
<p>In Git&#8217;s context, synonym for <a href="#def_object_name">object name</a>.</p>
</dd>
<dt class="hdlist1"><a id="def_head"></a>head</dt>
<dd>
<p>A <a href="#def_ref">named reference</a> to the <a href="#def_commit">commit</a> at the tip of a
<a href="#def_branch">branch</a>.  Heads are stored in a file in
<code>$GIT_DIR/refs/heads/</code> directory, except when using packed refs. (See
<a hre