Create "shortcut" for GET parameters redirection in Apache2

I try to create a config in apache server that will transfer the url

foo.bar/baz/hq

to

foo.bar/baz#a=1;b=2;c=3

where baz can be anything. I tried this (see https://stackoverflow.com/a/8606198/3475778)

RewriteRule ^([A-Za-z0-9-]+)/hq$ $1#foo=bar [NC,NE,R=302]

but somehow the redirect doesnt seem to work and I do not know why.

My conf file looks like this - sorry it is a bit messy, I am not a sysadmin.

<IfModule mod_ssl.c>
<VirtualHost *:443>
    ServerName xxx
    Redirect    302 /   http://xxx/


SSLCertificateFile /etc/letsencrypt/live/xxx/fullchain.pem
SSLCertificateKeyFile /etc/letsencrypt/live/xxx/privkey.pem
Include /etc/letsencrypt/options-ssl-apache.conf
</VirtualHost>
</IfModule>

<IfModule mod_ssl.c>
<VirtualHost *:443>
    ServerName xxx
    ErrorLog /var/log/apache2/xxx.net-error.log

    RewriteEngine on
    RewriteRule ^([A-Za-z0-9-]+)/hq$ $1#foo=bar [NC,NE,R=302]

    ProxyPass "/" "http://localhost:8000/"
    ProxyPassReverse "/" "http://localhost:8000/"
    ProxyPass "/http-bind" "http://localhost:8000/http-bind/"
    ProxyPassReverse "/http-bind" "http://localhost:8000/http-bind"
    RewriteEngine on
# Some rewrite rules in this file were disabled on your HTTPS site,
# because they have the potential to create redirection loops.

        RewriteCond %{HTTP:Upgrade} websocket [NC]
        RewriteCond %{HTTP:Connection} upgrade [NC]
        RewriteRule ^/?(.*) "ws://localhost:8000/$1" [P,L]


SSLCertificateFile /etc/letsencrypt/live/xxx/fullchain.pem
SSLCertificateKeyFile /etc/letsencrypt/live/xxx/privkey.pem
Include /etc/letsencrypt/options-ssl-apache.conf
</VirtualHost>
</IfModule>

The part of the url after # is not transmitted to the webserver in a GET, so it has no way of knowing if the redirect has already been done or not. This would turn into a recursive redirect with no way to break the loop.

If you want to do something like this, it needs to be done client side, possibly in javascript, where the anchor part of the URL can be accessed.

You could send someone to a link with a # in it from a server side app, but this would only be useful for the links leading to this page (including links on the same page). If you want to do it from the same page, you'd still need something client side to make it happen.