Apache :: RewriteRule Webroot To File-system Path

Two projects:

proj: site.loc
proj2.0: newsite.loc

They are located in different places on the file system. And i need to redirect from one project to another internally, so url for site.loc is preserved.

E.g. requesting site.loc/hey/there i need apache to serve files form proj2.0.

First, i know that on the .htaccess level we cannot use RewriteRule to file-system path (for security reasons).

Okay, an Alias is a workaround. Say I add an Alias to virtual host as following:

Code: Alias /newsite /some/path/to/proj2.0

Then if i'll add the rule to proj's .htaccess:

Code: RewriteRule ^hey/there /newsite

This will work.

But, the webroot does not work:

Code: RewriteRule ^$ /newsite

Is it i'm doing something wrong or there is some quirk about the webroot?