$ git clone -n https://src.fedoraproject.org/rpms/rust-futures-lite1.git /var/lib/mock/f40-build-2268617-54746/root/chroot_tmpdir/scmroot/rust-futures-lite1
Cloning into '/var/lib/mock/f40-build-2268617-54746/root/chroot_tmpdir/scmroot/rust-futures-lite1'...
$ git fetch origin f20f48f84064125b8771f3fff3a4c76b7b826c59:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-futures-lite1
 * [new ref]         f20f48f84064125b8771f3fff3a4c76b7b826c59 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f20f48f Initial import (futures-lite 1 compat package)