Need help in understanding the below
1). How do i check out to a particular commit and again revert back to the recent commit ?
Tried branch->checkout->same branch and check out to the previous commit, but when i did this the commits made after the one i checked out now got lost !
Its not in the list to checkout to recent commit !
2). How do i reset my head to a particular commit ?
(1) Usually, branch refs won't be changed by a Check Out, so you may use Check Out again to switch back to your branch: simply select the corresponding branch for "Showing Branches" selector.
If the branch ref to your old head is actually lost, you can open the Log and use Query|Load All Commits to display all such heads, then add a temporary branch ref to the corresponding head and check out this head.
(2) Local|Reset should work for you.
来源：https://stackoverflow.com/questions/6213343/how-to-checkout-and-reset-using-smartgit