I have a heroku database, d76mj7ltuqs.
I then have a local database, test_development.
The schema is the same on both of these data
clean your local database:
rake db:schema:load
dump your heroku database:
heroku pg:backups:capture -r <**your production git repo name**>
heroku pg:backups:download -r <**your production git repo name**>
load data in your local database
pg_restore --verbose --clean --no-acl --no-owner -h localhost -d <**test database name**> latest.dump