$ git clone -n https://src.fedoraproject.org/rpms/rust-futures0.1.git /var/lib/mock/f39-build-1521657-35853/root/chroot_tmpdir/scmroot/rust-futures0.1
Cloning into '/var/lib/mock/f39-build-1521657-35853/root/chroot_tmpdir/scmroot/rust-futures0.1'...
$ git fetch origin 87f0f7dd8dcfddd6e68082f0dfb3b5b3c2d47606:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-futures0.1
 * [new ref]         87f0f7dd8dcfddd6e68082f0dfb3b5b3c2d47606 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87f0f7d Remove tests that are unreliable and often spin forever