diff --git a/types/pipeline.go b/types/pipeline.go
--- a/types/pipeline.go
+++ b/types/pipeline.go
@@ -189,6 +189,21 @@
 	return m
 }
 
+// PipelinesByCommit keeps the first run per commit from newest-first input.
+func PipelinesByCommit(pipelines []*tangled.CiPipeline) map[string]Pipeline {
+	m := make(map[string]Pipeline, len(pipelines))
+	for _, pipeline := range pipelines {
+		if pipeline == nil {
+			continue
+		}
+		if _, ok := m[pipeline.Commit]; ok {
+			continue
+		}
+		m[pipeline.Commit] = Pipeline{CiPipeline: pipeline}
+	}
+	return m
+}
+
 func (p Pipeline) Counts() map[string]int {
 	m := make(map[string]int)
 	if p.CiPipeline != nil {
diff --git a/types/pipeline_test.go b/types/pipeline_test.go
new file mode 100644
--- /dev/null
+++ b/types/pipeline_test.go
@@ -0,0 +1,30 @@
+package types
+
+import (
+	"testing"
+
+	"tangled.org/core/api/tangled"
+)
+
+func TestPipelinesByCommitKeepsNewestFirstPipeline(t *testing.T) {
+	newest := &tangled.CiPipeline{Id: "newest", Commit: "shared"}
+	older := &tangled.CiPipeline{Id: "older", Commit: "shared"}
+	other := &tangled.CiPipeline{Id: "other", Commit: "other"}
+
+	got := PipelinesByCommit([]*tangled.CiPipeline{
+		newest,
+		nil,
+		other,
+		older,
+	})
+
+	if len(got) != 2 {
+		t.Fatalf("got %d mapped commits, want 2: %#v", len(got), got)
+	}
+	if got["shared"].Id() != "newest" {
+		t.Fatalf("shared commit mapped to pipeline %q, want newest", got["shared"].Id())
+	}
+	if got["other"].Id() != "other" {
+		t.Fatalf("other commit mapped to pipeline %q, want other", got["other"].Id())
+	}
+}
diff --git a/appview/pulls/list.go b/appview/pulls/list.go
--- a/appview/pulls/list.go
+++ b/appview/pulls/list.go
@@ -282,13 +282,7 @@
 			return m
 		}
 
-		for _, pipeline := range out.Pipelines {
-			if pipeline == nil {
-				continue
-			}
-			m[pipeline.Commit] = types.Pipeline{CiPipeline: pipeline}
-		}
-		return m
+		return types.PipelinesByCommit(out.Pipelines)
 	}(r.Context(), shas)
 
 	labelDefs, err := db.GetLabelDefinitions(
diff --git a/appview/pulls/single.go b/appview/pulls/single.go
--- a/appview/pulls/single.go
+++ b/appview/pulls/single.go
@@ -178,13 +178,7 @@
 			return m
 		}
 
-		for _, pipeline := range out.Pipelines {
-			if pipeline == nil {
-				continue
-			}
-			m[pipeline.Commit] = types.Pipeline{CiPipeline: pipeline}
-		}
-		return m
+		return types.PipelinesByCommit(out.Pipelines)
 	}(r.Context())
 
 	var workflowsChanged bool
diff --git a/appview/repo/repo_util.go b/appview/repo/repo_util.go
--- a/appview/repo/repo_util.go
+++ b/appview/repo/repo_util.go
@@ -115,9 +115,5 @@
 		return nil, err
 	}
 
-	for _, p := range out.Pipelines {
-		m[p.Commit] = types.Pipeline{CiPipeline: p}
-	}
-
-	return m, nil
+	return types.PipelinesByCommit(out.Pipelines), nil
 }