...
- Export your Fedora 4.7.5 repository to disk using the Fedora Import Export Tool (v0.3.0)
- Upgrade your Fedora 4.7.5 export to a Fedora 5.1.1 export using Fedora Upgrade Utility.
- Upgrade the Fedora 5.1.1 export to Fedora 6 compliant OCFL using the same utility except this time using the output of the previous step as the input for this task and adjusting the source and target parameters accordingly.
- Start up your Fedora pointing to the newly created OCFL in the previous step.
...