Depends on how the fence is hung.
Most of the hot-wire around here is a single strand around wheat. It's usually less than crotch high, so a guy can step over it. If not, a guy can either step on the wire to push it to the ground (rubber sole boots), or loosen one of the insulators on the electric fence post and lower it to the ground, step over, raise it back up.
If it's the mid-line of another type of wire fence (a lot of guys that run goats around here line barbed wire fences with E-fence around thigh high), then just climb the wire fence, then step around/over the E-wire.