path&gt; [&lt;commit-ish&gt;]</dt>
<dd>
<p>Create <code>&lt;path&gt;</code> and checkout <code>&lt;commit-ish&gt;</code> into it. The new working directory
is linked to the current repository, sharing everything except working
directory specific files such as HEAD, index, etc. <code>-</code> may also be
specified as <code>&lt;commit-ish&gt;</code>; it is synonymous with <code>@{-1}</code>.</p>
<div class="paragraph">
<p>If &lt;commit-ish&gt; is a branch name (call it <code>&lt;branch&gt;</code>) and is not 