Scenario: feature-branch-changed

The monorepo is on a branch upstream doesn't have, and the splice changed on it.

• Monorepo (vendor/a/): cloned at seed on main, then the branch feature with a local commit.
• Upstream: only main.

"New" counts the commits that upstream's default branch, main, lacks.

Output

setup.bash builds this state:

$ build_scenario scenario_feature_branch_changed

$ git splice status
On branch feature

  new, ahead 1  vendor/a  push creates the branch

$ git splice log
===  vendor/a (upstream has no 'feature' branch -- compared with 'main')
< e859a6b local change  (Test <test@example.com>)

push creates feature upstream, on top of main:

$ git splice push vendor/a
??   vendor/a: upstream has no 'feature' branch yet -- this push creates it
ok   vendor/a: pushed e859a6b to feature

$ git splice status
On branch feature

  up to date  vendor/a