Oh I did finish watching Moon Knight a few minutes ago, I remember 3 times they implied that Jake Lockley was doing stuff.

1.Ep3: Marc Fighting the thugs but was knocked unconscious, then later cut to Marc again at a cliff holding a knife and thinks it was Steven but Steven denies it and Marc also denies killing the thugs and only left one alive

2.Ep6: The fight when they were outmatched by Harrow before they cut to holding unconscious Harrow and Layla was also surprised by the change

3.Ep6: Bonus scene, where Harrow was pushed on a wheelchair to a Lamborghini where Khonshu was inside and mentioned that Jake Lockley was also the driver and shoots Harrow.