For Sagittarius ascendant natives Saturn rules over 2nd and 3rd and is a malefic planet for them. Now with Saturn movement through your ascendant will bring some challenges in your life but still this transit will be better than Saturn’s transit through your 12th house.
With Saturn passing through your ascendant there will be some health issues along with some laziness or in other words, you will find yourself postponing important works, which ultimately will lead to obstacles in your path for progress.
There will be some serious delays in marriage and promotion, but Saturn won’t be denying it, with the support of Jupiter and handwork you will get through things. Overall a transit which is better than the current one, but some tough situations will be there.