ee-files-location-check picks the wrong CE branch

In context of a CE-to-EE patch MR https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/4937, I've picked changes from CE in branch 31114-internal-ids-are-not-atomic, cleaned up any conflicts and changed other EE-specific files accordingly (e.g. use NonatomicInternalId instead of the old one).

Now the build fails because of the ee-files-location-check.

=> Running `git ls-remote https://gitlab-ci-token:xxxxxxxxxxxxxxxxxxxx@gitlab.com/gitlab-org/gitlab-ce.git "*31114-internal-ids-are-not-atomic*"`

💪 We found the branch '31114-internal-ids-are-not-atomic-2' in the https://gitlab-ci-token:xxxxxxxxxxxxxxxxxxxx@gitlab.com/gitlab-org/gitlab-ce.git repository. We will fetch it.
=> Running `git fetch https://gitlab-ci-token:xxxxxxxxxxxxxxxxxxxx@gitlab.com/gitlab-org/gitlab-ce.git 31114-internal-ids-are-not-atomic-2 --quiet`
=> Running `git diff FETCH_HEAD..HEAD --name-status --diff-filter=A -- ./ ':!ee' | cut -f2`

* 💥 changelogs/unreleased/31114-internal-ids-are-not-atomic.yml is EE-specific and should be moved to ee/changelogs/unreleased/31114-internal-ids-are-not-atomic.yml: 💥
  => git mv changelogs/unreleased/31114-internal-ids-are-not-atomic.yml ee/changelogs/unreleased/31114-internal-ids-are-not-atomic.yml

* 💥 spec/support/shared_examples/models/atomic_internal_id_spec.rb is EE-specific and should be moved to ee/spec/support/shared_examples/models/atomic_internal_id_spec.rb: 💥
  => git mv spec/support/shared_examples/models/atomic_internal_id_spec.rb ee/spec/support/shared_examples/models/atomic_internal_id_spec.rb

Note that, git ls-remote .. "*31114-internal-ids-are-not-atomic*" yields two branches:

e82a5e004ac8aa1de64c4627e0fbed6a027a3fdf        refs/heads/31114-internal-ids-are-not-atomic
0c2085331829f65078207fe95f9784b9c1469281        refs/heads/31114-internal-ids-are-not-atomic-2

I kept the -2 branch for reference, it includes an alternative solution but is otherwise unrelated to the MR at hand (and the other branch).

I suspect the build failure is because the wrong branch 31114-internal-ids-are-not-atomic-2 gets picked, which does not include the files mentioned above. If it were picking the right branch 31114-internal-ids-are-not-atomic-2 I'd expect it to pass.

I'm wondering if we should make scripts/ee-files-location-check more strict in which branch to pick.