Hi Pavan,
Please check the system copy/refresh guide for HANA.
As per the guide
Enter the schema names and the passwords that match the data in the backup. For example, if you install a system DEV and use a backup of the system PRD for the installation, you must specify SAPPRD as the schema in the dialogs, not SAPDEV
So why you required the Schema change.
Please also check below sap note
BR
AKJ