Merge pull request #2010 from timbrel/upstream-gone

Author: kaste

core/git_mixins/branches.py

@@ -71,7 +71,7 @@ def compute_branches_to_show(self, branch_name: str) -> list[str] | None:
  if branch_name == "HEAD"
  else b.canonical_name == branch_name
  ):
- if b.upstream:
+ if b.upstream and b.upstream.status != "gone":
  return [b.canonical_name, b.upstream.canonical_name]
  else:
  return [b.canonical_name]