Build with CreatedAt time instead of ChangedAt

internal/pipeline/build.go

@@ -53,7 +53,7 @@ type assetResource struct {
 	Rel       string
 	Resource  erf.Resource
 	Size      int64
-	ChangedAt time.Time
+	CreatedAt time.Time
 	ContentID string
 }
 
@@ -623,7 +623,7 @@ func fieldStringValueForScripts(value gff.Value) (string, bool) {
 
 func collectAssetResources(p *project.Project, requireContent bool, allowed map[string]struct{}) ([]assetResource, error) {
 	var hakResources []assetResource
-	assetChangedAt, err := collectGitAssetChangeTimes(p)
+	assetCreatedAt, err := collectGitAssetCreationTimes(p)
 	if err != nil {
 		return nil, err
 	}
@@ -653,15 +653,15 @@ func collectAssetResources(p *project.Project, requireContent bool, allowed map[
 			return nil, fmt.Errorf("stat %s: %w", abs, err)
 		}
 		repoRel := filepath.ToSlash(filepath.Join(assetsRelPath, filepath.FromSlash(rel)))
-		changedAt := assetChangedAt[repoRel]
-		if changedAt.IsZero() {
-			changedAt = info.ModTime()
+		createdAt := assetCreatedAt[repoRel]
+		if createdAt.IsZero() {
+			createdAt = info.ModTime()
 		}
 		hakResources = append(hakResources, assetResource{
 			Rel:       rel,
 			Resource:  resourceInfo.Resource,
 			Size:      erf.ArchiveSize([]erf.Resource{resourceInfo.Resource}),
-			ChangedAt: changedAt,
+			CreatedAt: createdAt,
 			ContentID: resourceInfo.ContentID,
 		})
 	}
@@ -845,7 +845,7 @@ func fileSHA256(path string) (string, error) {
 	return fmt.Sprintf("%x", sum[:]), nil
 }
 
-func collectGitAssetChangeTimes(p *project.Project) (map[string]time.Time, error) {
+func collectGitAssetCreationTimes(p *project.Project) (map[string]time.Time, error) {
 	result := make(map[string]time.Time, len(p.Inventory.AssetFiles))
 	if len(p.Inventory.AssetFiles) == 0 {
 		return result, nil
@@ -857,7 +857,7 @@ func collectGitAssetChangeTimes(p *project.Project) (map[string]time.Time, error
 	}
 	assetsRelPath = filepath.ToSlash(assetsRelPath)
 
-	output, err := gitOutput(p.Root, "log", "--format=commit:%ct", "--name-only", "--", assetsRelPath)
+	output, err := gitOutput(p.Root, "log", "--diff-filter=A", "--format=%ct", "--name-only", "--", assetsRelPath)
 	if err != nil {
 		return result, nil
 	}
@@ -873,12 +873,7 @@ func collectGitAssetChangeTimes(p *project.Project) (map[string]time.Time, error
 		if line == "" {
 			continue
 		}
-		if strings.HasPrefix(line, "commit:") {
-			sec, err := strconv.ParseInt(strings.TrimPrefix(line, "commit:"), 10, 64)
-			if err != nil {
-				currentCommitTime = time.Time{}
-				continue
-			}
+		if sec, err := strconv.ParseInt(line, 10, 64); err == nil {
 			currentCommitTime = time.Unix(sec, 0).UTC()
 			continue
 		}
@@ -1155,7 +1150,7 @@ func splitHAKGroup(cfg project.HAKConfig, assets []assetResource) ([]hakChunk, e
 }
 
 func compareAssetBuildOrder(a, b assetResource) int {
-	if cmp := a.ChangedAt.Compare(b.ChangedAt); cmp != 0 {
+	if cmp := a.CreatedAt.Compare(b.CreatedAt); cmp != 0 {
 		return cmp
 	}
 	if cmp := compareResourceKeys(a.Resource, b.Resource); cmp != 0 {