Changing the url hg pull uses

Possible Duplicate:
Changing Mercurial “Default” Parent URL

Initially our application was at

http://ourserver.com/webapp

now it is at

http://outserver.com/dev

Because I did an hg clone "http://ourserver.com/webapp" hg pull now uses "http://ourserver.com/webapp". How can I change it so hg pull uses "http://ourserver.com/dev" other than explicitly using hg pull http://ourserver.com/webapp or re-cloning the repo?