spl1=$(git subtree split --prefix subdir) &&
git subtree split --prefix subdir --branch splitbr1test &&
check_equal ''"$(git rev-parse splitbr1test)"'' "$spl1" &&
- git checkout splitbr1test &&
- new_hash=$(git rev-parse HEAD~2) &&
- git checkout mainline &&
+ new_hash=$(git rev-parse splitbr1test~2) &&
check_equal ''"$new_hash"'' "$subdir_hash"
'