centos – How to find out which repo lists libganglia-3.7.2 and to exclude this older version in my /etc/yum.repos.d/ dir?

I encountered a “Transaction check error” when updating the CentOS 7.9 using suso yum -y update command:

Transaction check error:
  file /usr/lib64/libganglia.so.0.0.0 from install of ganglia-3.7.2-40.el7.x86_64 conflicts with file from package libganglia-3.7.2-el7.x86_64

From Internet search, especially this thread, I’m guessing that the error seems to be yum trying to update ganglia from a newer version 3.7.2-40 to an old version 3.7.2. Instead of modifying /etc/yum.conf file to exclude updating ganglia, I would like to find out which repo lists package libganglia-3.7.2 and then to exclude this older version in my /etc/yum.repos.d/ dir. I don’t know how to do that, can you please give me some instructions to accomplish these two tasks? Thanks.

Some information I think may be useful: