$ git clone -n https://pagure.io/fedora-kiwi-descriptions.git /var/lib/mock/f42-kiwi-build-59133415-6571277/root/chroot_tmpdir/fedora-kiwi-descriptions
Cloning into '/var/lib/mock/f42-kiwi-build-59133415-6571277/root/chroot_tmpdir/fedora-kiwi-descriptions'...
$ git fetch origin e1c705012382e86de80df591e916a69a9d6a8f69:KOJI_FETCH_HEAD
From https://pagure.io/fedora-kiwi-descriptions
 * [new ref]         e1c705012382e86de80df591e916a69a9d6a8f69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1c7050 components/liveinstall: Filter out unwanted EFI files from the ESP