I'm not aware of a ready made script to make a development copy of a site and a database.
As a freelance Magento developer, I've worked in many teams and companies. Every one had their own development and deployment methodology.
Creating a development backup of a site would have been different under every circumstance, too.
That said, it almost never happened that someone would copy back code from a production site, except initially for an inherited project.
In that case,
rsync worked well. In all other cases, only a DB dump of the production system was fetched into dev or testing, since the code only was deployed in the other direction.
dev > testing > staging > production
or a variation thereof.
One tool I'm aware of to make pulling a dump of the database into dev is n98-magerun with the
db:dump --strip="@stripped" option.
It eliminates the (legal) issues related to copying customer and other sensitive data to development environments.
To summarize, I suggest:
- roll your own tool to initially copy code from production to development (check out rsync)
- after that, only move code from dev to production
- use n98-magerun to fetch db dumps from live to testing