Default naming of the car file for CLI command lassie fetch

[agmap]

The default name of the CAR file that is written to the file system with the CLI command lassie fetch -p <CID>/path/to/filename.ext is just <CID>.car
When I use a script, the CID is always overwritten when I fetch two or more files within the same root CID.
Is it possible that the default naming without specifying a name for the car file is as follows:
<CID>_path_to_filename.ext.car?