How to change permission for not changed files in git

fix-git-mode.sh

echo "Enter your slave branch:"
read your_branch
echo "Enter your main branch:"
read master_branch
changes=$(git --no-pager diff --name-only "$master_branch" "$your_branch")
while IFS= read -r file;
do
        file_changes=$(git --no-pager diff "$master_branch" "$your_branch" -- "$file")
        line_count=$(echo "$file_changes" | wc -l)
        if [ "$line_count" -eq 3 ]; then
                line2=$(echo "$file_changes" | sed -n '2p')  # Get the second line
                line3=$(echo "$file_changes" | sed -n '3p')  # Get the third line
                if [[ "$line2" == "old mode"* ]] && [[ "$line3" == "new mode"* ]]; then
                        chmod -x "$file"
                fi
        fi

done <<< "$changes"

echo "Success! Happy codding!"