For the records, I've been happy to see some work
on wiki documentation,
but if a guide for SVN checkout conversion appeared I've missed it.
I tried to do
1) checkout of compat,
2) copy of old checkout over new one, and
3) git stash / git pull / git stash pop
as suggested in
https://www.mediawiki.org/wiki/Bugzilla/Fields , but git
pull claims everything is up to date and while I get my files back the
checkout is broken. Hence, still using last SVN version (+ the https hack).
Nemo