Some of your uncommitted changes would be overwritten by syncing.Please commit your changes then try

解决方法有三种，在GitHub
shel中输入以下命令，任选一种方法就能解决问题

git reset --hard HEAD

-- Destructive. When you do this you'll throw away everything you've done up to that point and be back at the last HEAD before you made any changes.

git commit

-- In the middle. With this you're committing your changes which will get rid of the error but if the changes aren't complete its probably superfluous.

git stash -u

-- My recommendation. With this you're able to "stash" or set aside the changes you've made up until this point. Then you can pull from a remote without interfering. Once you've done that you can run a

git
stash pop

which will put back all of the changes you've made (without committing them).