Бэкап с помощью git — игнорирование субмодулей

thomas@machine:~/Code/test$ git clone https://github.com/blabla/blabla.git

thomas@machine:~/Code/test$ git submodule add https://github.com/ujjwalkarn/Machine-Learning-Tutorials.git
Resolving deltas: 100% (330/330), done.
Checking connectivity... done.

thomas@machine:~/Code/test/blabla$ git submodule deinit -f Machine-Learning-Tutorials 
Cleared directory 'Machine-Learning-Tutorials'
Submodule 'Machine-Learning-Tutorials' (https://github.com/ujjwalkarn/Machine-Learning-Tutorials.git) unregistered for path 'Machine-Learning-Tutorials'

thomas@machine:~/Code/test/blabla$ cat .gitmodules
[submodule "Machine-Learning-Tutorials"]
	path = Machine-Learning-Tutorials
	url = https://github.com/ujjwalkarn/Machine-Learning-Tutorials.git

thomas@machine:~/Code/test/blabla$ git submodule init
Submodule 'Machine-Learning-Tutorials' (https://github.com/ujjwalkarn/Machine-Learning-Tutorials.git) registered for path 'Machine-Learning-Tutorials'

thomas@machine:~/Code/test/blabla$ git submodule update
Submodule path 'Machine-Learning-Tutorials': checked out '8c98b64bf748287da954f6f2233e88aeba8157ab'

#!/bin/bash
gitbackup="git --git-dir=.git_backup --work-tree=./"

# Find all submodules recursively
SUBMODULES=$(find ./ -type d -name .git | xargs -n 1 dirname | grep -v Go | grep -v usr)

# Works as git submodule foreach, but can be used for non-git-submodule git trees
for module in $SUBMODULES; do
        echo "Bundling $module"
        pushd $module > /dev/null 2>&1
        git bundle create ../.$(basename $module).bundle --all > /dev/null 2>&1
        popd > /dev/null 2>&1
        $gitbackup add $module/../.$(basename $module).bundle
done

# Trying to commit changes
$gitbackup commit -m "$(date)" > /dev/null 2>&1

# Checking if there were changes
if [ $? -eq 0 ]; then
       	# If so, bundling everything
        echo "Created commit \"$(date)\" with updates"
        echo "Bundling whole backup tree to ./.backup.bundle"
        $gitbackup bundle create .backup.bundle -1 master > /dev/null 2>&1
else
    	echo "Nothing changed, nothing to update"
fi

git clone --depth 1 [REPO URL]