+@@ -612,7 +609,8 @@
+ unset TMPDIR
+ fi
+ fi
+- GPGHOMEDIR="$(mktemp --directory --tmpdir 'apt-key-gpghome.XXXXXXXXXX')"
++ # Use short options as busybox mktemp does not support long ones:
++ GPGHOMEDIR="$(mktemp -d -t 'apt-key-gpghome.XXXXXXXXXX')"
+ CURRENTTRAP="${CURRENTTRAP} cleanup_gpg_home;"
+ trap "${CURRENTTRAP}" 0 HUP INT QUIT ILL ABRT FPE SEGV PIPE TERM
+ if [ -z "$GPGHOMEDIR" ]; then