$ git clone -n https://src.fedoraproject.org/rpms/rust-hexyl.git /var/lib/mock/f45-build-42332-792/root/chroot_tmpdir/scmroot/rust-hexyl
Cloning into '/var/lib/mock/f45-build-42332-792/root/chroot_tmpdir/scmroot/rust-hexyl'...
$ git fetch origin 98c639458d3f007e9f55b84727ee295c9597e8c2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-hexyl
 * [new ref]         98c639458d3f007e9f55b84727ee295c9597e8c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 98c6394 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild