Revert "fix get branch to get latest remote (not local) state"

This reverts commit 9520573.

scripts/get

@@ -190,7 +190,7 @@ get_head()
     fi
 
     if ! git branch | grep "\* ${_local_branch}$" >/dev/null &&
-      ! git checkout --force remotes/${_name}/${_branch}
+      ! git checkout --force ${_local_branch}
     then
       rvm_error "Could not checkout branch ${_local_branch}."
       return 6