How to replace url?

Question

htaccess

Hello, there is a url like /catalog&cat=2 The
question is how to change the url for example to /nazvanie-page ?
Can it be done via htaccess?
The CNC is working on the site.
It is necessary to do not redirect to another existing page, but to replace the url!

Answer 1

The get is not part of the url and you have a very strange link because the & is used after the ?

RewriteCond %{QUERY_STRING} (^|&)cat\=2($|&)
RewriteRule ^catalog$ /nazvanie-page? [L,R=301]