Xcode Cloud Subscription plans and compute hours over

Want to use Xcode Cloud for CI CD. If my subscription is 100 compute hours/month and if it's get over by utilising 100 compute/hours, so what will happen? Is it going to auto renew/ subscribe by Apple or it will give intimation / warning and build generation will get stops? And is it going to affect my existing plans (The Apple Developer Program annual plan 99 USD)? Thank you in advance.

Xcode Cloud Subscription plans and compute hours over
 
 
Q