Do you mean you want the curve to be 0-1 but otherwise keep the shape? That should be
rebuildCurve -ch 1 -rpo 0 -rt 0 -end 1 -kr 2 -kcp 1 -kep 0 -kt 0 -s 0 -d 3 -tol 1e-08 "your_curve_here";
doesn’t do what you need?
Do you mean you want the curve to be 0-1 but otherwise keep the shape? That should be
rebuildCurve -ch 1 -rpo 0 -rt 0 -end 1 -kr 2 -kcp 1 -kep 0 -kt 0 -s 0 -d 3 -tol 1e-08 "your_curve_here";
doesn’t do what you need?