Script doesn't seem to work with CCC 5.1.8-b2 on Mojave

[timbck2]

I can't get EFIClone.sh to run successfully with the latest beta of CCC (v5.1.8-b2). The log reports this:

[Sun Jan 20 07:32:41 MST 2019] - ***** EFI Clone Script start
[Sun Jan 20 07:32:41 MST 2019] - working directory = /
[Sun Jan 20 07:32:41 MST 2019] - Running /Library/Application Support/com. bombich.ccc/Scripts/EFIClone.sh
[Sun Jan 20 07:32:41 MST 2019] - Called From Carbon Copy Cloner
[Sun Jan 20 07:32:41 MST 2019] - 1: Source Path = /private/tmp/16777223@ 190120073240
[Sun Jan 20 07:32:41 MST 2019] - 2: Destination Path = /Volumes/Tim's CCC Backup
[Sun Jan 20 07:32:41 MST 2019] - 3: CCC Exit Status =
[Sun Jan 20 07:32:41 MST 2019] - 4: Disk image file path =
[Sun Jan 20 07:32:41 MST 2019] - CCC did not exit with success, the EFI Clone Script will not run

So it appears that the script is expecting call parameters different than what CCC is sending. I'm not sure if this is a change in CCC's behavior or what.