diff --git a/pkg/place-holder b/pkg/~place-holder~
similarity index 100%
rename from pkg/place-holder
rename to pkg/~place-holder~
diff --git a/src/clean.bash b/src/clean.bash
index 4b6c6d73dc..c4c74dde7a 100755
--- a/src/clean.bash
+++ b/src/clean.bash
@@ -3,7 +3,7 @@
 # Use of this source code is governed by a BSD-style
 # license that can be found in the LICENSE file.
 
-rm -f $GOROOT/pkg/*.[6a]
+rm -rf $GOROOT/pkg/[0-9a-zA-Z_]*
 rm -f $GOROOT/lib/*.[6a]
 for i in lib9 libbio libmach_amd64 libregexp cmd runtime lib
 do