[pull] master from git:master

Documentation/RelNotes/2.56.0.adoc

@@ -546,6 +546,20 @@ Performance, Internal Implementation, Development Support etc.
    interfered with "git rebase" etc. too much.  The conditions "rerere
    gc" gets triggered have been tweaked.
 
+ * Windows build switches from MINGW64 to URCR64 runtime starting Git
+   2.56.0; switch the cmake based build at the same time.
+
+ * The mechanism to register in-memory alternate object sources has
+   been removed, as submodule object databases are now accessed
+   natively via their own repository structures.  This simplifies
+   object database management and prepares the codebase for migrating
+   alternate tracking into the files backend.
+
+ * The consistency checks for the object database (fsck) have been
+   decoupled from the generic builtin implementation and moved into the
+   backend-specific object source layers, making them pluggable for
+   different object storage formats.
+
 
 Fixes since v2.55
 -----------------

builtin/checkout.c

@@ -921,7 +921,7 @@ static int merge_working_tree(const struct checkout_opts *opts,
 		}
 	}
 
-	if (!cache_tree_fully_valid(the_repository->index->cache_tree))
+	if (!cache_tree_fully_valid(the_repository->index))
 		cache_tree_update(the_repository->index, WRITE_TREE_SILENT | WRITE_TREE_REPAIR);
 
 	if (write_locked_index(the_repository->index, &lock_file, COMMIT_LOCK))

builtin/commit.c

@@ -484,7 +484,7 @@ static const char *prepare_index(const char **argv, const char *prefix,
 				       LOCK_DIE_ON_ERROR);
 		refresh_cache_or_die(refresh_flags);
 		if (the_repository->index->cache_changed
-		    || !cache_tree_fully_valid(the_repository->index->cache_tree))
+		    || !cache_tree_fully_valid(the_repository->index))
 			cache_tree_update(the_repository->index, WRITE_TREE_SILENT);
 		if (write_locked_index(the_repository->index, &index_lock,
 				       COMMIT_LOCK | SKIP_IF_UNCHANGED))

builtin/fetch.c

@@ -2681,7 +2681,7 @@ int cmd_fetch(int argc,
 		int *rs = config.recurse_submodules == RECURSE_SUBMODULES_DEFAULT
 			  ? &config.recurse_submodules : NULL;
 
-		fetch_config_from_gitmodules(sfjc, rs);
+		fetch_config_from_gitmodules(the_repository, sfjc, rs);
 	}