Repository import stuck on 'Optimizing repository and pushing commits to GitHub…'

Hello experts,

Since yesterday, I been attempting to import my Azure DevOps repository into GitHub with no success.
I use GitHub ‘Import repository’ feature, then the process hangs for hours on what seems to be the last stage:

image

Optimizing repository and pushing commits to GitHub…

I’ve tried canceling and re-importing… Problem persists.
My last attempt involved leaving it working all night. Still nothing.

Any reason the import would hang?
How can I make this work??

Another DevOps from the same workspace was imported successfully in the same manner in a matter of minutes, on the first try. :frowning:

Import hangs: https://dev.azure.com/BeSpunky/libraries/_git/angular-zen
Import succeeded: https://dev.azure.com/BeSpunky/Libraries/_git/angular-google-maps

Thanks in advance,
Shy Agam.