$ git clone -n https://src.fedoraproject.org/rpms/fwupd-efi.git /var/lib/mock/f40-build-1330707-23551/root/chroot_tmpdir/scmroot/fwupd-efi
Cloning into '/var/lib/mock/f40-build-1330707-23551/root/chroot_tmpdir/scmroot/fwupd-efi'...
$ git fetch origin f6b36e5ad257a48c623d5231260dda776168a702:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fwupd-efi
 * [new ref]         f6b36e5ad257a48c623d5231260dda776168a702 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6b36e5 New upstream release