Merge branch 'km/avoid-cp-a'

Portability fix.

* km/avoid-cp-a:
  test: fix t7001 cp to use POSIX options

t/t7001-mv.sh

@@ -308,7 +308,7 @@ test_expect_success 'git mv moves a submodule with a .git directory and no .gitm
 	(
 		cd sub &&
 		rm -f .git &&
-		cp -a ../.git/modules/sub .git &&
+		cp -R -P -p ../.git/modules/sub .git &&
 		GIT_WORK_TREE=. git config --unset core.worktree
 	) &&
 	mkdir mod &&
@@ -331,7 +331,7 @@ test_expect_success 'git mv moves a submodule with a .git directory and .gitmodu
 	(
 		cd sub &&
 		rm -f .git &&
-		cp -a ../.git/modules/sub .git &&
+		cp -R -P -p ../.git/modules/sub .git &&
 		GIT_WORK_TREE=. git config --unset core.worktree
 	) &&
 	mkdir mod &&