Fix submodule remotes to match .gitmodules

fix_submodule_remotes.sh

#!/bin/bash

find . -name '.gitmodules' | while read gitmodules;  do
  parent_path="$(echo $gitmodules | sed -e 's/.gitmodules//')"

  git config -f $gitmodules --get-regexp '^submodule\..*\.path$' |
    while read path_key path
    do
        url_key=$(echo $path_key | sed 's/\.path/.url/')
        gitmodules_url=$(git config -f $gitmodules --get "$url_key")
        submodule_path=$(echo "$url_key" | sed -e 's/^submodule.//' -e 's/.url$//')
        (
          cd ./$parent_path/$submodule_path
          remote_url=$(git remote -v | grep origin | head -1 | awk '{print $2}')
          if [ "$gitmodules_url" != "$remote_url" ]; then
            git remote rename origin old-$(date +%Y%m%d%H%M%S)
            git remote add origin $gitmodules_url
            git fetch --all
          fi
        )
    done

done

git submodule update --init --recursive