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Reset local branch to remote branch HEAD

First, reset to the previously fetched HEAD of the corresponding upstream branch:

git reset --hard @{u}

The advantage of specifying @{u} or its verbose form @{upstream} is that the name of the remote repo and branch don’t have to be explicitly specified.

Next, as needed, remove untracked files, optionally also with -x:

git clean -df

Finally, as needed, get the latest changes:

git pull

Source: StackOverflow