How do I clone a local repo with submodules?
<p>Say I recursively clone a repo.</p>

<pre><code>$ git clone --recursive ssh://server/project/client
Cloning into 'client'...
remote: Counting objects: 191, done
remote: Finding sources: 100% (191/191)
remote: Total 191 (delta 53), reused 159 (delta 53)
Receiving objects: 100% (191/191), 27.59 KiB | 0 bytes/s, done.
Resolving deltas: 100% (53/53), done.
Checking connectivity... done.
Submodule 'gui' (ssh://server/project/client/gui.git) registered for path 'gui'
Cloning into 'gui'...
remote: Counting objects: 3213, done
remote: Finding sources: 100% (3213/3213)
remote: Total 3213 (delta 1272), reused 3107 (delta 1272)
Receiving objects: 100% (3213/3213), 47.88 MiB | 12.05 MiB/s, done.
Resolving deltas: 100% (1272/1272), done.
Checking connectivity... done.
Submodule path 'gui': checked out '7315db8d7a8b36929f7874dc5477359839ec51ce'
</code></pre>

<p>Now I want to create a local clone of that local repo (perhaps after making and committing changes locally).</p>

<pre><code>$ git clone --recursive client/ client_copy
Cloning into 'client_copy'...
done.
Submodule 'gui' (/home/deployer/client/gui.git) registered for path 'gui'
fatal: repository '/home/deployer/client/gui.git' does not exist
Clone of '/home/deployer/client/gui.git' into submodule path 'gui' failed
</code></pre>

<p>My <code>.gitmodules</code> file looks like this:</p>

<pre><code>[submodule "gui"]
        path = gui
        url = ../client/gui.git
</code></pre>

<p>Why does this fail, and how can I address the issue?</p>