Whether the paper is repeated or not depends entirely on the requirements of the school for the repetition rate of the paper, which is an important index of the paper. The repetition rate of undergraduate thesis must be within 30%. If it exceeds 30%, the paper must be returned for revision. Only the revised papers are eligible for graduation defense. But if it exceeds 50%, the thesis defense will be postponed, and if plagiarism is serious, even if you don't take part in the defense, your degree will be revoked.