diffrent capture gamut get the same result when render exr file

i usually render custom render passes exr file in level sequence, the default color gamut is Rec.709/sRGB in render setting,it works well.
recently i want to try ACEScg gamut ,but i found that the render result with ACEScg is as same as the Rec.709/sRGB result,
l’ve tried other color gamut,they all get the same result.(check them in nuke and photoshop)
why they are same?how to render ACEScg gamut correct?