How to get rid of unwanted photo rotation in Modern CV template?

I’m using the popular modern-cv template on LaTeX (on Overleaf!) – while my photo appears correctly oriented in the Overleaf preview, it gets rotated (unwanted!) when I download the PDF.

Also, I’m not able to figure out ways to adjust both the height and the width of the photo – the only available options are to adjust the height and the width of the border around the photo.

photo[80pt][0.4pt]{my_pic} % The first bracket is the picture height, the second is the thickness of the frame around the picture (0pt for no frame)