git branch --set-upstream-to=＜remote＞/＜branch＞ master

WANGPENGAH+Administrator@wangpengah MINGW64 /d/workspace/mwclient (master)
$ git pull
There is no tracking information for the current branch.
Please specify which branch you want to merge with.
See git-pull(1) for details.

    git pull <remote> <branch>

If you wish to set tracking information for this branch you can do so with:

    git branch --set-upstream-to=<remote>/<branch> master

EXAMPLES

• Update the remote-tracking branches for the repository you cloned from, then merge one of them into your current branch:

  $ git pull
  $ git pull origin

  Normally the branch merged in is the HEAD of the remote repository, but the choice is determined by the branch.<name>.remote and branch.<name>.merge options; see git-config(1) for details.

• Merge into the current branch the remote branch next:

  $ git pull origin next

  This leaves a copy of next temporarily in FETCH_HEAD, and updates the remote-tracking branch origin/next. The same can be done by invoking fetch and merge:

  $ git fetch origin
  $ git merge origin/next

If you tried a pull which resulted in complex conflicts and would want to start over, you can recover with git reset.