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git-upload-pack.html
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<title>git-upload-pack(1)</title>
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<body class="manpage">
<div id="header">
<h1>git-upload-pack(1) Manual Page</h1>
<h2 id="_name">NAME</h2>
<div class="sectionbody">
<p>git-upload-pack - Send objects packed back to git-fetch-pack</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="verseblock">
<pre class="content"><em>git-upload-pack</em> [--[no-]strict] [--timeout=<n>] [--stateless-rpc]
[--advertise-refs] <directory></pre>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Invoked by <em>git fetch-pack</em>, learns what
objects the other side is missing, and sends them after packing.</p>
</div>
<div class="paragraph">
<p>This command is usually not invoked directly by the end user.
The UI for the protocol is on the <em>git fetch-pack</em> side, and the
program pair is meant to be used to pull updates from a remote
repository. For push operations, see <em>git send-pack</em>.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_options">OPTIONS</h2>
<div class="sectionbody">
<div class="dlist">
<dl>
<dt class="hdlist1">--[no-]strict</dt>
<dd>
<p>Do not try <directory>/.git/ if <directory> is not a Git directory.</p>
</dd>
<dt class="hdlist1">--timeout=<n></dt>
<dd>
<p>Interrupt transfer after <n> seconds of inactivity.</p>
</dd>
<dt class="hdlist1">--stateless-rpc</dt>
<dd>
<p>Perform only a single read-write cycle with stdin and stdout.
This fits with the HTTP POST request processing model where
a program may read the request, write a response, and must exit.</p>
</dd>
<dt class="hdlist1">--http-backend-info-refs</dt>
<dd>
<p>Used by <a href="git-http-backend.html">git-http-backend(1)</a> to serve up
<code>$GIT_URL/info/refs</code>?service=git-upload-pack requests. See
"Smart Clients" in <a href="gitprotocol-http.html">gitprotocol-http(5)</a> and "HTTP
Transport" in the <a href="gitprotocol-v2.html">gitprotocol-v2(5)</a>
documentation. Also understood by
<a href="git-receive-pack.html">git-receive-pack(1)</a>.</p>
</dd>
<dt class="hdlist1"><directory></dt>
<dd>
<p>The repository to sync from.</p>
</dd>
</dl>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_environment">ENVIRONMENT</h2>
<div class="sectionbody">
<div class="dlist">
<dl>
<dt class="hdlist1"><code>GIT_PROTOCOL</code></dt>
<dd>
<p>Internal variable used for handshaking the wire protocol. Server
admins may need to configure some transports to allow this
variable to be passed. See the discussion in <a href="git.html">git(1)</a>.</p>
</dd>
<dt class="hdlist1"><code>GIT_NO_LAZY_FETCH</code></dt>
<dd>
<p>When cloning or fetching from a partial repository (i.e., one
itself cloned with <code>--filter</code>), the server-side <code>upload-pack</code>
may need to fetch extra objects from its upstream in order to
complete the request. By default, <code>upload-pack</code> will refuse to
perform such a lazy fetch, because <code>git</code> <code>fetch</code> may run arbitrary
commands specified in configuration and hooks of the source
repository (and <code>upload-pack</code> tries to be safe to run even in
untrusted .<code>git</code> directories).</p>
<div class="paragraph">
<p>This is implemented by having <code>upload-pack</code> internally set the
<code>GIT_NO_LAZY_FETCH</code> variable to <code>1</code>. If you want to override it
(because you are fetching from a partial clone, and you are sure
you trust it), you can explicitly set <code>GIT_NO_LAZY_FETCH</code> to
<code>0</code>.</p>
</div>
</dd>
</dl>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_security">SECURITY</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Most Git commands should not be run in an untrusted .<code>git</code> directory
(see the section <code>SECURITY</code> in <a href="git.html">git(1)</a>). <code>upload-pack</code> tries to
avoid any dangerous configuration options or hooks from the repository
it’s serving, making it safe to clone an untrusted directory and run
commands on the resulting clone.</p>
</div>
<div class="paragraph">
<p>For an extra level of safety, you may be able to run <code>upload-pack</code> as an
alternate user. The details will be platform dependent, but on many
systems you can run:</p>
</div>
<div class="literalblock">
<div class="content">
<pre>git clone --no-local --upload-pack='sudo -u nobody git-upload-pack' ...</pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph">
<p><a href="gitnamespaces.html">gitnamespaces(7)</a></p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_git">GIT</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Part of the <a href="git.html">git(1)</a> suite</p>
</div>
</div>
</div>
</div>
<div id="footer">
<div id="footer-text">
Last updated 2025-02-14 21:38:14 -0800
</div>
</div>
</body>
</html>