To restore GitHub data, follow the steps below:
Restore for repositories larger than 3 GB is currently not supported.
Go to the Application resilience page.
Click Restore on the GitHub service tile.
On the Restore page, click the Filter button to apply data type and other relevant filters to find the data you want to restore.
Select the data you want to restore, select a corresponding recovery point from the drop-down list, and then click the Restore button.

Click Restore in the Restore objects confirmation window to run the restore job. The restored object name will be updated to include the suffix: Restore_at_restore_time.