[yocto] gitsm fetcher fixes in thud?

[Scott Murray]

Hi,

I'm working on upgrading Automotive Grade Linux (AGL) from rocko to thud,
and there's substantial git submodule breakage with the fetcher as it
stands in thud ATM.  I've been doing tests with the current gitsm.py from
master with Mark's recent fixes, and it works fine.  I'm wondering what
the feasibility of getting those fixes into thud is?  I am willing to do
the cherry-picking and testing if someone can point me at the mechanism
for it (poky-contrib?).

Thanks,

Scott