想请问，在安装mysql的时候，看到rpm包有三个，
https://repo.mysql.com//mysql80-community-release-el7-1.noarch.rpm
https://repo.mysql.com//mysql80-community-release-el7-2.noarch.rpm
https://repo.mysql.com//mysql80-community-release-el7-3.noarch.rpm
比较想知道这release-el7后的123有什么区别
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