s over the wire, this hook can be used to implement access
control without relying on filesystem ownership and group
membership. See <a href="git-shell.html">git-shell(1)</a> for how you might use the login
shell to restrict the user&#8217;s access to only git commands.</p>
</div>
<div class="paragraph">
<p>Both standard output and standard error output are forwarded to
<code>git send-pack</code> on the other end, so you can simply <code>echo</code> messages
for the user.</p>
</div>
<div class="paragraph">
