try $(pwd) -> $PWD

See https://lore.kernel.org/git/220628.865yklgr6g.gmgdl@evledraar.gmail.com/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>

t/t5339-no-lazy-fetch-with-commit-graph.sh

@@ -18,7 +18,7 @@ test_expect_success 'setup: prepare a repository with a commit' '
 
 test_expect_success 'setup: prepare a repository with commit-graph contains the commit' '
 	git init with-commit-graph &&
-	echo "$(pwd)/with-commit/.git/objects" \
+	echo "$PWD/with-commit/.git/objects" \
 		>with-commit-graph/.git/objects/info/alternates &&
 	# create a ref that points to the commit in alternates
 	git -C with-commit-graph update-ref refs/ref_to_the_commit "$oid" &&
@@ -30,7 +30,7 @@ test_expect_success 'setup: prepare a repository with commit-graph contains the
 
 test_expect_success 'setup: change the alternates to what without the commit' '
 	git init --bare without-commit &&
-	echo "$(pwd)/without-commit/objects" \
+	echo "$PWD/without-commit/objects" \
 		>with-commit-graph/.git/objects/info/alternates &&
 	test_must_fail git -C with-commit-graph cat-file -e $oid
 '
@@ -41,10 +41,10 @@ test_expect_success 'setup: prepare any commit to fetch' '
 '
 
 test_expect_success 'fetch any commit from promisor with the usage of the commit graph' '
-	git -C with-commit-graph remote add origin "$(pwd)/with-commit" &&
+	git -C with-commit-graph remote add origin "$PWD/with-commit" &&
 	git -C with-commit-graph config remote.origin.promisor true &&
 	git -C with-commit-graph config remote.origin.partialclonefilter blob:none &&
-	run_with_limited_processses env GIT_TRACE="$(pwd)/trace" \
+	run_with_limited_processses env GIT_TRACE="$PWD/trace" \
 		git -C with-commit-graph fetch origin $anycommit 2>err &&
 	test_i18ngrep ! "fatal: promisor-remote: unable to fork off fetch subprocess" err &&
 	test $(grep "fetch origin" trace | wc -l) -eq 1