We have the depot set as such:
Depot View:
//build:CMESW23-SRN02:RAS:pc_workarea/...@lea_server-rc_8.3.0-8.3.0.39_release

I verify this works properly by running this command:

p4 sync //build:CMESW23-SRN02:RAS:pc_workarea/...@lea_server-rc_8.3.0-8.3.0.39_release

When I attempt to trigger the build I get this error:
Error encountered while triggering manual build: Could not retrieve changelogs from perforce

This shows up in the logs:
Caused by: com.tek42.perforce.PerforceException: Unable to parse output for change numbers. Output: Unintelligible revision specification 'lea_server-rc_8.3.0-8.3.0.39_release@281495,@now'.