Virtuabotix DS1302 Real Time Clock

Hello,
i am using rtc ds1302 in a project.
The library which i am using is from virtuabotix.
Here's the link:-
https://www.virtuabotix.com/virtuabotix-ds1302-real-time-clock-module-pin-out-coding-guide/
The problem is as soon as i reset the arduino, the time again starts from the set time
request to get help asap.
thanks.