$ git clone -n https://src.fedoraproject.org/rpms/rust-hamming.git /var/lib/mock/f45-build-42308-792/root/chroot_tmpdir/scmroot/rust-hamming
Cloning into '/var/lib/mock/f45-build-42308-792/root/chroot_tmpdir/scmroot/rust-hamming'...
$ git fetch origin d96b0e92f345ac4624fb5fb485d7ec587172fd6b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-hamming
 * [new ref]         d96b0e92f345ac4624fb5fb485d7ec587172fd6b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d96b0e9 Regenerate with rust2rpm v28