$ git clone -n https://src.fedoraproject.org/rpms/rust-asahi-nvram.git /var/lib/mock/f40-build-2149742-50890/root/chroot_tmpdir/scmroot/rust-asahi-nvram
Cloning into '/var/lib/mock/f40-build-2149742-50890/root/chroot_tmpdir/scmroot/rust-asahi-nvram'...
$ git fetch origin 8b211333e9732dc18d25aaecc8d06e9d444f379a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-asahi-nvram
 * [new ref]         8b211333e9732dc18d25aaecc8d06e9d444f379a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b21133 Update to 0.2.1; Fixes: RHBZ#2248002