RewriteRule : How to retain Apache Host in the url

[Tushar Chavan <tushar.chavan@xxxxxxxxxxx>]

Hi Experts,
 
We have definded rewrite rule as below
RewriteEngine on
RewriteRule ^/(sap\(.*)         http://srmhost.kjo.com.sa:8000/$1
So now whenever url  https://apache_host.domain/sap(bD1lbiZjPTAxNiZkPW1pbg==)/bc/bsp/sap/z_ros_self_reg1/main.htm is called, it
will re-direct to  http://srmhost.kjo.com.sa:8000/sap(bD1lbiZjPTAxNiZkPW1pbg==)/bc/bsp/sap/z_ros_self_reg1/main.htm
which is ok.
 
But can we retain apache_host name in the url so that srmhost is not visible to the outer world.
 
Best Regards,
Tushar.