Revert all submodules of the project to initial state.

git-fix-submodules.sh

#!/bin/bash

# wait for Enter key
function pause(){
   read -p "$*"
}

echo ''
echo Reverting all submodules...
echo ''

# reset all changes in submodules
git submodule foreach --recursive git reset --hard

# revert changes in all submodules to initial state
git submodule update --init --recursive