You could use mod_rewrite
(if using Apache webserver) to map one url to another in the .htaccess
file:
RewriteEngine on
RewriteRule ^/script/jquery/jquery$ /script/jquery/jquery-1.2.3.js [NC,L]
Not sure what kind of feature that would be though. I can't see any benefit of doing so. One can always inspect any asset downloaded along with the page.
The only "protection" there is would be to build entire app into one bundle file (using Webpack for example) and then obfuscate the code. But there are plenty of deobfuscation tools already, available online. So no, you can't protect front assets.