Chances of being rejected?

Hey everyone, I applied to a master's program at Tsinghua SIGS towards the end of the international application period. I wasn't accepted, but they offered me an alternative program to interview for which I did.

My application portal status now has the comprehensive assessment section marked as "completed" for the adjustment interview, and they recently reopened my documents section for me to add some missing files and a letter of commitment.

I was just wondering what are the chances I'll be rejected at this stage? Has anyone had to sign the letter of commitment and still got rejected?