git worktree add --detach scripts/v$rel scripts/$cbr
} &&
+case $(sed -n 's,^kver=\(.*\) extra=\(.*\),\1-gnu\2,p' \
+ scripts/v$rel/deblob-$cbr) in
+"$cbr$(echo $rel | sed -n 's,.*\(-gnu\),\1,p')") ;;
+*) echo $rel mismatches release implied by scripts/v$rel/deblob-$cbr >&2
+ echo "$cbr$(echo $rel | sed -n 's,.*\(-gnu\),\1,p')" vs \
+ $(sed -n 's,^kver=\(.*\) extra=\(.*\),\1-gnu\2,p' \
+ scripts/v$rel/deblob-$cbr) >&2
+ continue;;
+esac &&
+
git worktree add --detach sources/v$rel $up/v$rup &&
git worktree add --detach logs/v$rel public/logs/v$prevn &&