t1"><a id="def_upstream_branch"></a>upstream branch</dt>
<dd>
<p>The default <a href="#def_branch">branch</a> that is merged into the branch in
question (or the branch in question is rebased onto). It is configured
via branch.&lt;name&gt;.remote and branch.&lt;name&gt;.merge. If the upstream branch
of <em>A</em> is <em>origin/B</em> sometimes we say "<em>A</em> is tracking <em>origin/B</em>".</p>
</dd>
<dt class="hdlist1"><a id="def_working_tree"></a>working tree</dt>
<dd>
<p>The tree of actual checked out 