merge(3p/git): Merge git upstream at v2.26.2

third_party/git/t/t5514-fetch-multiple.sh

@@ -183,4 +183,15 @@ test_expect_success 'git fetch --all --tags' '
 	test_cmp expect test8/output
 '
 
+test_expect_success 'parallel' '
+	git remote add one ./bogus1 &&
+	git remote add two ./bogus2 &&
+
+	test_must_fail env GIT_TRACE="$PWD/trace" \
+		git fetch --jobs=2 --multiple one two 2>err &&
+	grep "preparing to run up to 2 tasks" trace &&
+	test_i18ngrep "could not fetch .one.*128" err &&
+	test_i18ngrep "could not fetch .two.*128" err
+'
+
 test_done