latest coreutils deprecated the usage of 'head -1'

head will just error and not output anything:
head: `-1' option is obsolete; use `-n 1'
Try `head --help' for more information.

the scripts/mkconfigs uses head -1 while generating the KERNVER value
root@vapier 0 linux # grep 'head -1' scripts/mkconfigs 
KERNVER="`grep VERSION $1 | head -1 | cut -f3 -d' '`.`grep PATCHLEVEL $1 | head
-1 | cut -f3 -d' '`.`grep SUBLEVEL $1 | head -1 | cut -f3 -d' '``grep
EXTRAVERSION $1 | head -1 | cut -f3 -d' '`"