File sha256_clone_fix.patch of Package git

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File sha256_clone_fix.patch of Package git (Revision b4547842c646007caedece9f82b5f594)

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commit 8b214c2e9dda8fc5b8d49b978fd2c155b7596cd0
Author: Junio C Hamano <gitster@pobox.com>
Date:   Wed Apr 5 14:15:33 2023 -0700

clone: propagate object-format when cloning from void
    
    A user could prepare an empty repository and set it to use SHA256 as
    the object format.  The new repository created by "git clone" from
    such a repository however would not record that it is expecting
    objects in the same SHA256 format.  This works as expected if the
    source repository is not empty.
    
    Just like we started copying the name of the primary branch from the
    remote repository even if it is unborn in 3d8314f8 (clone: propagate
    empty remote HEAD even with other branches, 2022-07-07), lift the
    code that records the object format out of the block executed only
    when cloning from an instantiated repository, so that it works also
    when cloning from an empty repository.
    
    Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/clone.c b/builtin/clone.c
index 462c286274..8f16d18a43 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -910,6 +910,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 	int err = 0, complete_refs_before_fetch = 1;
 	int submodule_progress;
 	int filter_submodules = 0;
+	int hash_algo;
 
 	struct transport_ls_refs_options transport_ls_refs_options =
 		TRANSPORT_LS_REFS_OPTIONS_INIT;
@@ -1298,15 +1299,15 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 		}
 	}
 
-	if (mapped_refs) {
-		int hash_algo = hash_algo_by_ptr(transport_get_hash_algo(transport));
-
 		/*
 		 * Now that we know what algorithm the remote side is using,
 		 * let's set ours to the same thing.
 		 */
-		initialize_repository_version(hash_algo, 1);
-		repo_set_hash_algo(the_repository, hash_algo);
+	hash_algo = hash_algo_by_ptr(transport_get_hash_algo(transport));
+	initialize_repository_version(hash_algo, 1);
+	repo_set_hash_algo(the_repository, hash_algo);
+
+	if (mapped_refs) {
 		/*
 		 * transport_get_remote_refs() may return refs with null sha-1
 		 * in mapped_refs (see struct transport->get_refs_list
diff --git a/t/t5702-protocol-v2.sh b/t/t5702-protocol-v2.sh
index 71aabe30b7..6af5c2062f 100755
--- a/t/t5702-protocol-v2.sh
+++ b/t/t5702-protocol-v2.sh
@@ -269,6 +269,17 @@ test_expect_success 'clone propagates unborn HEAD from non-empty repo' '
 	grep "warning: remote HEAD refers to nonexistent ref" stderr
 '
 
+test_expect_success 'clone propagates object-format from empty repo' '
+	test_when_finished "rm -fr src256 dst256" &&
+
+	echo sha256 >expect &&
+	git init --object-format=sha256 src256 &&
+	git clone src256 dst256 &&
+	git -C dst256 rev-parse --show-object-format >actual &&
+
+	test_cmp expect actual
+'
+
 test_expect_success 'bare clone propagates unborn HEAD from non-empty repo' '
 	test_when_finished "rm -rf file_unborn_parent file_unborn_child.git" &&

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File sha256_clone_fix.patch of Package git (Revision b4547842c646007caedece9f82b5f594)

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