Hi, I don't know exactly where to buy such glass, but I can recommend you guys https://www.unscratchthesurface.com/gla ... -services/
, who work with scratched glass coverings. They restored my 2012 Focus Electric side window last year. In fact, I also wanted to buy a new glass, as there was a deep scratch, but this company surprised me. The window looked as good as new and there were no scratch marks ! Moreover, I saved money and time on buying a new glass. So, you can call them and they will help you.