t2024: Fix &&-chaining and a couple of typos

Improved-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t2024-checkout-dwim.sh

@@ -104,7 +104,7 @@ test_expect_success 'setup more remotes with unconventional refspecs' '
 		cd repo_c &&
 		test_commit c_master &&
 		git checkout -b bar &&
-		test_commit c_bar
+		test_commit c_bar &&
 		git checkout -b spam &&
 		test_commit c_spam
 	) &&
@@ -113,9 +113,9 @@ test_expect_success 'setup more remotes with unconventional refspecs' '
 		cd repo_d &&
 		test_commit d_master &&
 		git checkout -b baz &&
-		test_commit f_baz
+		test_commit d_baz &&
 		git checkout -b eggs &&
-		test_commit c_eggs
+		test_commit d_eggs
 	) &&
 	git remote add repo_c repo_c &&
 	git config remote.repo_c.fetch \