$ git clone -n https://src.fedoraproject.org/rpms/rust-rust-ini0.18.git /var/lib/mock/f45-build-44573-815/root/chroot_tmpdir/scmroot/rust-rust-ini0.18
Cloning into '/var/lib/mock/f45-build-44573-815/root/chroot_tmpdir/scmroot/rust-rust-ini0.18'...
$ git fetch origin e8430165b32438a78a5947d3175c26df1b7391a6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rust-ini0.18
 * [new ref]         e8430165b32438a78a5947d3175c26df1b7391a6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e843016 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild