This really isn't an issue, as the polymerases involved in generating NGS libraries are very high fidelity. You'd also want to do biological replicates of your samples anyway, and the risk of a single base pair mutation or so would only matter if you are going to be doing variant calling in your downstream applications.

thanks Kristin M. Adams

Thank you @Mathew A Beale. You have explained very well.

With high fidelity Taq polymerase or DNA polymerase I, this will be no issue

Gbolabo Olaitan Onasanya thanks for the insight.

@Farheen Shafique Its my pleasure