pygrib reports incorrect forecast time in str() representation for HRRR 15 minute grib file

[akrherz]

Using pygrib 2.1.5, the attached HRRR grib file is instantaneous solar radiation at sixty minutes from model initialization

hrrr_grib2.zip

wgrib2 properly reports this as

$ wgrib2 hrrr.grib2 
1:0:d=2024040807:DSWRF:surface:60 min fcst:

pygrib says this

>>> import pygrib
>>> str(pygrib.open("hrrr.grib2")[1])
'1:Downward short-wave radiation flux:W m**-2 (instant):lambert:surface:level 0:fcst time 1 mins:from 202404080700'

So 1 mins is in error here.