The KOMA-Script bundle provides an option to specify the amount of binding correction needed to compensate for the width lost in the binding process. By default, it is added to the left margin, which is where the binding is applied for left-to-right languages. However, if a document is written in Hebrew or Arabic, it is bound on the right. The KOMA-Script manual does not consider that option. After a bit of playing around, I’ve found that simply using a negative value for the binding correction works.
For example, if in an English document you would use
documentclass[BCOR=8.25mm]{scrreprt}
For Hebrew you would set
documentclass[BCOR=-8.25mm]{scrreprt}