Ignore header mismatch rejects with patch command

While applying a patch with cvs, the only rejects I have are due to file header mismatches. I knew of an option to ignore such rejects but couldn't figure out now.

The rejects look something like this. Does someone knows how to avoid such rejects?

! // -*--*-    $Revision: 1.48 $
! // Last checked in by $Author: foo $ on $Date: ... $

  /*****************************************************************
   *
***************
*** 1,5 ****
! // -*--*-     $Revision: 1.14 $
! //  Last checked in by开发者_如何学运维 $Author: foo $  on $Date: .... $

  /*****************************************************************

I don't think it is possible to get patch to ignore CVS keywords but you can bypass them completely by using the -kk parameter when you generate the diff. eg.

cvs rdiff -kk ...

From the documentation on keyword substitution:

-kk

Generate only keyword names in keyword strings; omit their values. For example, for the Revision keyword, generate the string $Revision$ instead of $Revision: 5.7 $. This option is useful to ignore differences due to keyword substitution when comparing different revisions of a file (see section Merging and keywords).