--- ./src/Makefile.global.in.orig	2023-09-20 01:43:11.912283855 +0000
+++ ./src/Makefile.global.in	2023-09-20 01:44:30.815263616 +0000
@@ -676,6 +676,7 @@
     $(pg_regress_locale_flags) $(EXTRA_REGRESS_OPTS)
 pg_regress_installcheck = \
     echo "+++ regress install-check in $(subdir) +++" && \
+    $(with_temp_install) \
     $(top_builddir)/src/test/regress/pg_regress \
     --inputdir=$(srcdir) \
     --bindir='$(bindir)' \