The upper panel of your Qlik Sense interface should be complemented with the green versioning icon. Click on it and reveal an additional panel for further versioning:
Load Script versioning icon
Load Script versioning panel
On the right side of the panel the first drill-down lets you choose the commits to the current repository:
Select Commit from repository
Second drill-down lets you choose the branch of the current repository:
Select Branch from repository
As an example, "branch1" was selected to compare the versions of the Main script section:
Script version in panel view
Note how the differences are highlighted yellow - you can easily replace the changes by clicking on the "Revert chunk" arrow between the panels:
Revert chunk arrow
After the changes have been made, you can find the Save button at the top panel:
Save changes to the current script version
Change Repo
You can also see the versioning from any other repository of your choice. Change Repo button allows you to do so:
Change Repo functionality
Notice the "Show only repos containing the selected tab in script" option - tick if you aim at fetching the changes from the same tab in different application repository.
As an example, the repository called "Peek-vs-Previous" is selected and the corresponding script version can be seen on the right side of the panel for comparison and/or making changes:
