Restore-Checkout-Hash.ps1 fails due to missing lib/OFM-Updater dependency

[Nears]

While following https://github.com/OpenKNX/OpenKNX/wiki/Getting-(cloning)-an-OpenKNX-Project-from-Github

I am failing in the step
./Restore-Checkout-Hash.ps1

with the error

./Restore-Checkout-Hash.ps1

Subproject lib/knx
HEAD is now at 4c16a38 Merge pull request #256 from OpenKNX/add-flash-callback
M       .vscode/extensions.json

Subproject lib/OFM-Updater
fatal: failed to stat '.... /OpenKNX/OAM-LogicModule/lib/OFM-Updater': No such file or directory

I am not able to find any OFM-Updater repository within OpenKNX.
Is it maybe an access issue or an outdated script or am I doing something wrong?

If needed I am happy to support any debugging,