The "whatis" command:

Usage: fossil whatis NAME

Resolve the symbol NAME into its canonical artifact hash
artifact name and provide a description of what role that artifact
plays.

Options:

   --type TYPE          Only find artifacts of TYPE (one of: 'ci', 't',
                        'w', 'g', or 'e').
   -v|--verbose         Provide extra information (such as the RID)