The Hasselblad X1D II has a 43.8mm x 32.9mm sensor. That computes to a diagonal of just under 55mm and an aspect ratio of 4:3 or 1.333:1.

With the two lenses in question, and assuming you want to preserve infinity focus by using the lenses' designed registration distance of 44mm:

• You'd give up pretty much the possibility of any shift with the TS-E 45mm f/2.8 as you'd only have 1.5mm to spare at each corner of the frame. Most lenses are designed to allow about that much room between the absolute edge of the image circle and the usable portion of the image circle.
• You'd have a bit more room to play with using the TS-E 24mm f/3.5 L II (be sure and confirm that the measurement you're using of 67mm image circle applies to whichever of the two TS-E 24mm variants you're considering). You'd nominally have about 4.5mm on each corner to play with (4.5mm + 1.5mm = 6mm x 2 = 12mm), but that is in the direction of the sensor's diagonal. If you want to move in a direction that is horizontal with respect to the long side of the sensor, You'd be able to move about 4.8mm in either direction. Moving vertically with respect to the long side of the sensor, you'd be limited to about 6.7mm of movement.

I've taken the liberty of using scottbb's diagram with the addition of the usable portion of the image circle and superimposed light blue rectangles where the image circle would be over the sensor at the limits of usable movement.

Please note: The ratio of the sensor diagonal to the diameter of the image circle in the diagram is approximately 1.414:1, which would mean an image circle of about 78mm if the sensor diagonal is 55mm. (The sensor's aspect ratio is also 3:2 (1.5:1) instead of 4:3 (1.33:1), and the differences between Sw and Sh would be less with a more square sensor). Image circles of 58mm and 67mm, respectively, would be much smaller in relation to the sensor.

And what would the corresponding focal length be, approximately?

The focal length of either lens will not change, they'll still be 24mm and 45mm lenses. The larger sensor size will yield a wider angle of view than the same lenses would give on a 35mm/FF camera. Your "crop factor" would be roughly 0.8X, so using the 43.8 x 32.9 mm sensor would give similar diagonal angles of view as 19mm and 35mm lenses would give using a 35mm/FF camera. Keep in mind that the aspect ratio is different. The larger sensor is 4:3 or 1.333:1, while the smaller 35mm/FF sensor is 3:2 or 1.5:1, so you'd get slightly more vertical coverage and slightly less horizontal coverage with the Hasselblad after applying the "crop factor" than you would get with a 35mm/FF camera.