I'm a recent git convert. It's great to be able to use git-svn to keep my branches locally without disturbing the svn server. There was a bug that existed in the latest version of the code. I wanted to establish a time when it worked so that I could use git bisect. I couldn't find the right command to move back in time. Thanks.
git checkout HEAD~1
This will move your current HEAD to one revision earlier.
git checkout <sha>
This will move your current HEAD to the given revision. Use git log or gitk to find the revision you’re looking for.
And getting back to latest (equivalent to: svn up), you'll need to update the branch, usually:
git checkout master
This is because the HEAD refers to the version that is being checked out.
git pull
seems a more appropriate command for what you are looking for
This seems to do what I wanted, which is what I think you're asking for too
git checkout *
If you are using TortoiseGit then
Right Click in project folder > TortoiseGit > Pull
来源：https://stackoverflow.com/questions/573585/whats-the-git-equivalent-of-svn-update-r