code: public static String cloneContent(String source, GitService service, String comment) throws Exception {
      String rev = GitService.moveContentToBranch(source, service, service.getBranchName(), comment);
      service.push(false);
      return rev;
    }
docs: Replaces the content contained within the Git repository branch pointed to by the {@link GitService} object with the source.
  
  @param source The directory to commit the content from.
  @param service The {@link GitService} pointing to the repository and branch to commit to.
  @param comment The commit message.
  @return The new revision.
  @throws Exception