Prevent asset reloading (cache refresh?)

I notice that whenever I copy the whole directory of the Yii project to another server/location, the first time that you access the website the assets are reloaded. I copied from my server to my local computer and that happend. Also from one computer to another and got the same behavior. I want to prevent it. How can I do it?

This is the expected behaviour. Why do you need to prevent this?