[yocto] Basehash value changed issue

[techi eth]

Hi,

I am facing issue with basehash value changed while building image on one
of my test board (Ref of beagle bone) on morty branch.

Error :
gateway.bb.do_rootfs, the basehash value changed from
e685a429b8df6dcff60063f087d425ee to 3f98a102f48ea8722835ad0d65bfbc1f. The
metadata is not deterministic and this needs to be fixed

When i run bitbake-diffsigs -t gateway do_rootfs
I found below O/P.
basehash changed from 8e6b9498c9704590bd016491efcbf9f9 to
3f98a102f48ea8722835ad0d65bfbc1f
Variable TIME value changed from '112854' to '115745'

After googling I found that TIME need's to be added in vardepsexclude list.
I added below in conf/distro/machine.conf but error persist.
do_rootfs[vardepsexclude] = "TIME DATE DATETIME"

Please suggest me where & what has to be added to come out of issue.
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