diff --git a/git-prune.sh b/git-prune.sh
index b28630cacf..ef31bd2a68 100755
--- a/git-prune.sh
+++ b/git-prune.sh
@@ -15,6 +15,7 @@ do
     shift;
 done
 
+sync
 git-fsck-objects --full --cache --unreachable "$@" |
 sed -ne '/unreachable /{
     s/unreachable [^ ][^ ]* //
diff --git a/git-repack.sh b/git-repack.sh
index 49547a77c7..d341966efb 100755
--- a/git-repack.sh
+++ b/git-repack.sh
@@ -62,6 +62,7 @@ then
 	# all-into-one is used.
 	if test "$all_into_one" != '' && test "$existing" != ''
 	then
+		sync
 		( cd "$PACKDIR" &&
 		  for e in $existing
 		  do
diff --git a/prune-packed.c b/prune-packed.c
index 16685d1d8b..26123f7f6b 100644
--- a/prune-packed.c
+++ b/prune-packed.c
@@ -71,6 +71,7 @@ int main(int argc, char **argv)
 		/* Handle arguments here .. */
 		usage(prune_packed_usage);
 	}
+	sync();
 	prune_packed_objects();
 	return 0;
 }