You can back up an Azure DevOps repository group on demand.
From the navigation pane, go to Protect > Applications > DevOps.
The DevOps page appears.
Click the DevOps app.
The DevOps app page appears.
Under Repository groups, in the row for the repository group, click the action button , and then click Back up.
The Select backup level dialog box appears.
For Backup level, select the backup type.