--- old/qemu-debootstrap
+++ new/qemu-debootstrap
@@ -90,6 +90,14 @@
             die "option %s requires an argument" "$1"
         fi
       ;;
+      --keyring)
+        if [ $# -ge 2 -a -n "$2" ]; then
+            opts="$opts $(escape "$1") $(escape "$2")"
+            shift 2
+        else
+            die "option %s requires an argument" "$1"
+        fi
+      ;;
       --*)
         opts="$opts $(escape "$1")"
         shift
@@ -157,6 +165,6 @@
 
 eval run debootstrap --arch "$deb_arch" --foreign $opts $args
 mkdir -p "$target/usr/bin"
-cp $(which "qemu-$qemu_arch-static") "$target/usr/bin"
+run cp $(which "qemu-$qemu_arch-static") "$target/usr/bin"
 run chroot "$target" /debootstrap/debootstrap --second-stage