How to bring a branch back on a file when the tag has been moved

[Prabhu Ram (InfoSpace Inc)]

Hi,
We have a branch on which dev. was taking place and someone accidentally moved the tag (which is also the branch name) to the tip of the branch.  Is there a "nice" way of setting the branch back to the branch point ?  I managed to do the right thing by going to the RCS file but I would rather not.

Some more details:
Before mess up:
     foo.c (1.1) -> BRANCH_NEW
          |                    |
          |                   V
          |              1.1.2.1
          |                    |
          |                   V
                        1.1.2.2

After mess up:
     foo.c ->            1.1
          |                    |
          |                   V
          |              1.1.2.1
          |                    |
          |                   V
          |              1.1.2.2 (BRANCH_NEW)

Question is how to get back to before the mess up ?  Thanks in anticipation of the response.
-Prabhu
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