Oh, my mistake, I was going off of the manual.
TUNE
Tune sets the pitch of the sample. The knob works in a bipolar fashion, and a value of 0 leaves the pitch unchanged. The range is +/- 5 octaves. Press and hold [FUNC], and then turn the DATA ENTRY knob to snap parameter values to full octaves. Press and turn the DATA ENTRY knob to snap parameter values to semitones.
and pressing and turning still snaps to semitones when setting a trig.
Edit: Feature request made Digitakt II Feature Requests - #1678 by ripsaw