$ git clone -n https://src.fedoraproject.org/rpms/gnu-efi.git /var/lib/mock/f38-build-side-42-init-devel-728060-27337/root/chroot_tmpdir/scmroot/gnu-efi
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-728060-27337/root/chroot_tmpdir/scmroot/gnu-efi'...
$ git fetch origin cafdc477045434baaf4bb95a1bb57091ae21577c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnu-efi
 * [new ref]         cafdc477045434baaf4bb95a1bb57091ae21577c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cafdc47 Fix build error on aarch64