There are at least 2 ways to do this.
Let's start with the easiest. Option 1:
Option 2 is done using TortoiseSVN and is more manual. If you're not familiar with SVN or Tortoise in general, stick with option 1. Otherwise:
Do you want to access it locally or build a package in the cloud?
locally, you can use the “reverse merge changes” feature. Download a copy of your mainline, go to the team tab > reverse merge changes. From here you can select a commit or a range of commits that you want to “reverse”. So in this case select revision 456 as your start and 459 as your end. Next the modeler will download those revisions and create the reverse of them. If you want to make these changes permanent you can commit them.
Alternatively, you can create a branch line from revision 455. Go to the team tab > manage branch lines. From here you can create a branch from your mainline and select which revision to create it from
For the cloud, when you build a package you can select a development line and certain revision to build off of.
hope this helps!