diff --git a/odb/source-loose.c b/odb/source-loose.c
index 3c9edba46a..b2fbccd3c0 100644
--- a/odb/source-loose.c
+++ b/odb/source-loose.c
@@ -599,7 +599,7 @@ static int odb_source_loose_freshen_object(struct odb_source *source,
 static void close_loose_object(struct odb_source_loose *loose,
 			       int fd, const char *filename)
 {
-	if (loose->base.will_destroy)
+	if (loose->will_destroy)
 		goto out;
 
 	if (batch_fsync_enabled(FSYNC_COMPONENT_LOOSE_OBJECT))
diff --git a/odb/source-loose.h b/odb/source-loose.h
index 3cf2e1f8f1..7c7e845fe3 100644
--- a/odb/source-loose.h
+++ b/odb/source-loose.h
@@ -28,6 +28,9 @@ struct odb_source_loose {
 
 	/* Map between object IDs for loose objects. */
 	struct loose_object_map *map;
+
+	/* Whether this is a source that will never be committed to disk. */
+	int will_destroy;
 };
 
 struct odb_source_loose *odb_source_loose_new(struct object_database *odb,
diff --git a/odb/source.h b/odb/source.h
index ea00873763..9fd2b2e5b5 100644
--- a/odb/source.h
+++ b/odb/source.h
@@ -81,11 +81,6 @@ struct odb_source {
 	 */
 	bool local;
 
-	/*
-	 * This object store is ephemeral, so there is no need to fsync.
-	 */
-	int will_destroy;
-
 	/*
 	 * Path to the source. If this is a relative path, it is relative to
 	 * the current working directory.
diff --git a/tmp-objdir.c b/tmp-objdir.c
index 719b55e580..2f2ffbbc7d 100644
--- a/tmp-objdir.c
+++ b/tmp-objdir.c
@@ -14,7 +14,6 @@
 #include "odb/source.h"
 #include "odb/source-files.h"
 #include "odb/source-loose.h"
-#include "odb/source-packed.h"
 #include "repository.h"
 
 struct tmp_objdir {
@@ -213,8 +212,7 @@ struct tmp_objdir *tmp_objdir_create(struct repository *r,
 	 * since the objects in the database may roll back.
 	 */
 	t->temp_dir = odb_files_dir_new(t->repo->objects, t->path.buf, false);
-	t->temp_dir->loose->base.will_destroy = will_destroy;
-	t->temp_dir->packed->base.will_destroy = will_destroy;
+	t->temp_dir->loose->will_destroy = will_destroy;
 	t->temp_dir->next = files->dirs;
 
 	t->orig_dir = files->dirs;