grep: enable recurse-submodules to work on <tree> objects

diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index da1ad3e70ea140ecd5ac0741a146084ba518523f..4ea534e9fa70ea302d4a88a8bc922c100f896873 100755 (executable)
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -4,7 +4,7 @@ test_description='blob conversion via gitattributes'
 
 . ./test-lib.sh
 
-TEST_ROOT="$(pwd)"
+TEST_ROOT="$PWD"
 PATH=$TEST_ROOT:$PATH
 
 write_script <<\EOF "$TEST_ROOT/rot13.sh"