I imagine I could answer this myself by looking carefully at the history of the golang
package, but what happens if you end up doing the mass rebuild with a pre-release version?
Would you need to do a second mass rebuild with the final version between the beta and
final freezes?
The Beta Freeze is currently scheduled for 2022-08-23, and Go 1.19 final is scheduled for
sometime in August, so getting the mass rebuild done with the final version before the
beta freeze might be tight or it might be just fine.