If you have access to derecho, casper, or cheyenne, then you should see the file here:
/glade/campaign/cesm/cesmdata/inputdata/lnd/clm2/surfdata_esmf/ctsm5.2.0/surfdata_ne0np4.ARCTICGRIS.ne30x8_hist_78pfts_CMIP6_2000_c230517.nc
If not, I'm putting a copy of the file in
ftp://ftp.cgd.ucar.edu/pub/slevis