Jenkins automatically builds a strange question after merge rquest agrees?

problem description

simply restore it. For example, there are two files, A and B . I have modified A, and the online master is also the version, after A has been changed, and then my colleague is changing the B file, but the branch he is based on is still in the unmodified state of A, and then he proposes a MR (merge request),. I agree with the code built by Jenkins that MR, found that An is unmodified, and B is modified .
this is a bit confusing. I have encountered this problem several times before. I would like to ask you about it.
I wrote refs/heads/master about the, branch to build in the configuration built, so I should only build the master branch

Php jenkins-ci jenkins

Oct.24,2021

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