I believe those are trills with an ascending termination rather than mordents. Baroque trill begin o the note above the principal note, so I'd probably play the first one a-g-a-g-f#-g-a or a-g-a-g-a-g-f#-g-a. Unfortunately, that symbol is not in Bach's Explicatio of the ornaments, so I cannot be completely sure.
Thank you, I was not sure what to call them. I have seen many charts that explain what that symbol does but not what it is named.a-g-a-g-f#-g-a is what the charts say and what the video does but what I am still wondering, though, is why the F would be # and not natural since the key is G minor?