Add note about the LSSTCam fiducial values

config/lsstCam/computeExposureSummaryStats.py

@@ -7,6 +7,10 @@
 # processed in u/jchiang/ptc_BLOCK-275_w_2024_28.
 # See DM-45333 for more details.
 
+# Note that we don’t have the real LSSTCam ones yet. As currently formulated,
+# the fiducials depend on the detector gains, and it hasn't been decided yet
+# how to "average" (or otherwise pick from) the detectors in LSSTCam.
+
 # Fiducial PsfSigma in pixels
 config.fiducialPsfSigma = {
     "u": 1.72,