Merge branch 'js/close-packs-before-gc'

A small future-proofing of a test added recently.

* js/close-packs-before-gc:
  t5510: do not leave changed cwd

Author: gitster

t/t5510-fetch.sh

@@ -679,10 +679,12 @@ test_expect_success 'fetching with auto-gc does not lock up' '
 	EOF
 	git clone "file://$D" auto-gc &&
 	test_commit test2 &&
-	cd auto-gc &&
-	git config gc.autoPackLimit 1 &&
-	GIT_ASK_YESNO="$D/askyesno" git fetch >fetch.out 2>&1 &&
-	! grep "Should I try again" fetch.out
+	(
+		cd auto-gc &&
+		git config gc.autoPackLimit 1 &&
+		GIT_ASK_YESNO="$D/askyesno" git fetch >fetch.out 2>&1 &&
+		! grep "Should I try again" fetch.out
+	)
 '
 
 test_done