$ git clone -n https://src.fedoraproject.org/rpms/rust-toml0.5.git /var/lib/mock/f45-build-45559-823/root/chroot_tmpdir/scmroot/rust-toml0.5
Cloning into '/var/lib/mock/f45-build-45559-823/root/chroot_tmpdir/scmroot/rust-toml0.5'...
$ git fetch origin 70f080252114dd4b37693b8922dd674449cdf6a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-toml0.5
 * [new ref]         70f080252114dd4b37693b8922dd674449cdf6a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 70f0802 Regenerate with rust2rpm v28