How to set rest pose as pose? UPDATE: Here is the .blend file

I would like a step by step guide which shows how I can make it so that the current pose looks EXACTLY like the rest pose.

This is my armature in rest position:



This is how it looks like in pose position:



I want to reset the pose position to look like the rest position.

I tried Pose -> Clear Transform -> All.



But this is the result:
In Outliner change to "Current Scene" in dropdown, r/click on
"metarig" and click "Delete heirarchy". You have two identical rigs
and meshes, although metarig only shows origins suggesting you
deleted in edit mode. Irrespective, it messes with your active rig.
Select your mesh and apply rotation and scale (ctrl-a).
In pose mode select shin.l and delete the Limit Rotation constraint. In the IK panel set the Pole Angle to 0.
In pose mode select shin.r and set the pole angle to 0.
Ditto forearm.l, set pole angle to 90
Ditto forearm.r, set pole angle to -90


edit: formatting