test_expect_success 'initial merge' '
git remote add -f gui ../git-gui &&
- git merge -s ours --no-commit gui/master &&
+ git merge -s ours --no-commit --allow-unrelated-histories gui/master &&
git read-tree --prefix=git-gui/ -u gui/master &&
git commit -m "Merge git-gui as our subdirectory" &&
git checkout -b work &&