How about doing it as a post load script like this (tested on my local package-cache)...

oldPackageName := 'ShoutTests'.

newPackageName := 'Shout-Tests'.

repository := MCRepository allSubInstances detect: [ :repo | repo location =��

'/Users/ben/Library/Application Support/Pharo/package-cache' ].

" 'http://smalltalkhub.com/mc/Pharo/Pharo40/main' ]."

oldPackage := RPackageOrganizer default packageNamed: oldPackageName.

newPackage := oldPackage renameTo: newPackageName.

mcWorkingCopy := newPackage mcPackage workingCopy.

uniqueNewVersion := (mcWorkingCopy uniqueVersionNameIn: repository) trimBoth.

newVersion := mcWorkingCopy��

newVersionWithName: uniqueNewVersion��

message: 'Issue 14439 - ShoutTests should be Shout-Tests'

in: repository.

newVersion ifNotNil: [

Cursor wait showWhile: [

[ repository storeVersion: newVersion.

] ensure: [ (MCVersionInspector new version: newVersion) show ]

]

].

For reference, I munged that together from tracing NautliusMonticello>>commit:in:��