Redact a file from git repository

gistfile1.sh

git filter-branch --index-filter 'git rm --cached --ignore-unmatch config/initializers/secret_token.rb' --prune-empty --tag-name-filter cat -- --all
git push origin master --force
git push origin production --force
git push origin discovery --force
git push origin rec --force
git push origin related --force
rm -rf .git/refs/original/
git reflog expire --expire=now --all
git gc --prune=now
git gc --aggressive --prune=now