Reason: Generally, the topics of graduation thesis of graduates from two colleges are decided by their own tutors, so if you revise the last senior thesis of another school, you should basically not find any duplication.
However, you know that the teachers in major universities are generally young teachers who have graduated from universities with doctorates or old teachers who have worked for many years. Young teachers generally have a better understanding of the research direction of brothers and sisters. You can find papers with similar contents, which shows that your teachers have similar research directions with teachers from other schools. This ray had better not be touched. Besides, don't talk about older teachers. Usually some teachers in a certain research direction are very familiar with the communication between universities.
To sum up, don't touch this bottom line. Undergraduate graduation thesis is easy to write, and it is no problem to write an undergraduate thesis in a month or two.
Pure personal opinion, hope to adopt.