Zypper patch update

I have a question regarding SLES patching lifecycle. We are using zypper and RMT server to pull and deploy patches in the environment. We have Dev → SIT → Staging —> Prod environment. Normally there is around 2 months gap between a patch deployment in lowest environment i.e. Dev till the same patch being applied in Production. Now my question is, if there is any newly released patches getting available in the RMT server, how can we exclude them from being applied in the Production.
I understand, by disabling the sync timer i RMT perhaps we can achieve that, but want to know what the services we have to disable till the same patch set is getting applied in Production…
Is there any way we can track one any new patch is getting available in the RMT repositories ?