$ git clone -n https://src.fedoraproject.org/rpms/gnu-efi.git /var/lib/mock/f40-build-805452-144813/root/chroot_tmpdir/scmroot/gnu-efi
Cloning into '/var/lib/mock/f40-build-805452-144813/root/chroot_tmpdir/scmroot/gnu-efi'...
$ git fetch origin a31824338e15dc39c21727c60caeafd172f6989f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnu-efi
 * [new ref]         a31824338e15dc39c21727c60caeafd172f6989f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a318243 Use the standard pkg-config location