$ git clone -n https://src.fedoraproject.org/rpms/rust-tracing-futures.git /var/lib/mock/f41-build-side-1-2761076-31747/root/chroot_tmpdir/scmroot/rust-tracing-futures
Cloning into '/var/lib/mock/f41-build-side-1-2761076-31747/root/chroot_tmpdir/scmroot/rust-tracing-futures'...
$ git fetch origin 914bab2405728bf652435125d37f6b2379212cb4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tracing-futures
 * [new ref]         914bab2405728bf652435125d37f6b2379212cb4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 914bab2 Drop unused support for tokio 0.1 and futures 0.1