$ git clone -n https://src.fedoraproject.org/rpms/rust-aliasable.git /var/lib/mock/f45-build-40037-767/root/chroot_tmpdir/scmroot/rust-aliasable
Cloning into '/var/lib/mock/f45-build-40037-767/root/chroot_tmpdir/scmroot/rust-aliasable'...
$ git fetch origin 3f981fa1f1661e5ecfddeb105c9222785b4c03d6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-aliasable
 * [new ref]         3f981fa1f1661e5ecfddeb105c9222785b4c03d6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f981fa Regenerate with rust2rpm v28