enable cloning of shallow repo

src/clone.c

@@ -409,6 +409,7 @@ static int clone_into(git_repository *repo, git_remote *_remote, const git_fetch
 
 	memcpy(&fetch_opts, opts, sizeof(git_fetch_options));
 	fetch_opts.update_fetchhead = 0;
+	if (fetch_opts.depth == -1)
 		fetch_opts.download_tags = GIT_REMOTE_DOWNLOAD_TAGS_ALL;
 	git_buf_printf(&reflog_message, "clone: from %s", git_remote_url(remote));
 

tests/clone/shallow.c

@@ -15,6 +15,15 @@ void test_clone_shallow__cleanup(void)
 
 #define CLONE_DEPTH 5
 
+static int remote_single_branch(git_remote **out, git_repository *repo, const char *name, const char *url, void *payload)
+{
+	GIT_UNUSED(payload);
+
+	cl_git_pass(git_remote_create_with_fetchspec(out, repo, name, url, "+refs/heads/master:refs/remotes/origin/master"));
+
+	return 0;
+}
+
 void test_clone_shallow__clone_depth(void)
 {
 	git_buf path = GIT_BUF_INIT;
@@ -27,6 +36,7 @@ void test_clone_shallow__clone_depth(void)
 	int error = 0;
 
 	clone_opts.fetch_opts.depth = CLONE_DEPTH;
+	clone_opts.remote_cb = remote_single_branch;
 
 	git_buf_joinpath(&path, clar_sandbox_path(), "shallowclone");
 
@@ -35,21 +45,18 @@ void test_clone_shallow__clone_depth(void)
 	cl_assert_equal_b(true, git_repository_is_shallow(repo));
 
 	cl_git_pass(git_repository_shallow_roots(&roots, repo));
-	cl_assert_equal_i(1, roots.count);
-	cl_assert_equal_s("83834a7afdaa1a1260568567f6ad90020389f664", git_oid_tostr_s(&roots.ids[0]));
+	cl_assert_equal_i(3, roots.count);
+	cl_assert_equal_s("c070ad8c08840c8116da865b2d65593a6bb9cd2a", git_oid_tostr_s(&roots.ids[0]));
+	cl_assert_equal_s("0966a434eb1a025db6b71485ab63a3bfbea520b6", git_oid_tostr_s(&roots.ids[1]));
+	cl_assert_equal_s("83834a7afdaa1a1260568567f6ad90020389f664", git_oid_tostr_s(&roots.ids[2]));
 
 	git_revwalk_new(&walk, repo);
 
 	git_revwalk_push_head(walk);
 
 	while ((error = git_revwalk_next(&oid, walk)) == GIT_OK) {
-		//if (depth + 1 > CLONE_DEPTH)
-			//cl_fail("expected depth mismatch");
-		char str[GIT_OID_HEXSZ +1];
-		git_oid_fmt(str, &oid);
-		printf(str);
-		printf("\n");
-		depth++;
+		if (depth + 1 > CLONE_DEPTH)
+			cl_fail("expected depth mismatch");
 	}
 
 	cl_git_pass(error);