Nginx as proxy for plone cms?

Question

Nginx

There is a server with cms on plane. Another server acted as an apache http proxy. It was decided to virtualize it and transfer it to nginx. in apache config:

ServerName my.site.ru
  RewriteEngine On
  RewriteRule ^/(.*) http://192.168.88.5:8080/VirtualHostBase/http/my.site.ru:80/kf/VirtualHostRoot/$1 [L,P]

everything works correctly. I tried to remake it under nginx through the converter and read the documentation for the plan. The output is a redirect and in the address bar

http://192.168.88.5:8080/VirtualHostBase/http/my.site.ru:80/kf/VirtualHostRoot

How to make a redirect with the substitution of the address bar to my.site.ru?