There is a script script-fu-copy-rotate-nLayer.scm from http://registry.gimp.org/node/22254
Works on a selection so select the whole layer with the design, apply the script. Find it in the Select menu.
looks like this: https://i.imgur.com/mJ48tie.jpg
Edit: Since reg.gimp.org is long gone that file now attached. Unzip and put in your User Profile scripts folder
Works on a selection so select the whole layer with the design, apply the script. Find it in the Select menu.
looks like this: https://i.imgur.com/mJ48tie.jpg
Edit: Since reg.gimp.org is long gone that file now attached. Unzip and put in your User Profile scripts folder