I've screw up my code, and sadlly I've made several commit already and found a bug which looks like a myth to fix, so the only solusion should be to get the copy I uploaded to github earlier (which is not a screwed up version). (Oh thanks the GREAT GITHUB! )
I tried run git clone https://github.com/username/Spoon-Knife.git
    remote: Counting objects: 253, done.
    remote: Compressing objects: 100% (150/150), done.
    Receiving objects:  64% (162/253), 20.00 Kremote: Total 253 (delta 119), reused
    Receiving objects:  66% (167/253), 20.00 KiB | 15 KiB/s
    Receiving objects: 100% (253/253), 60.99 KiB | 15 KiB/s, done.
    Resolving deltas: 100% (119/119), done.
but it seems not working. Some files remained unchanged. How do I deal with it? to pull from the remote github version?
 
    