$ git clone -n https://src.fedoraproject.org/rpms/rust-apple-dmg.git /var/lib/mock/f45-build-40107-768/root/chroot_tmpdir/scmroot/rust-apple-dmg
Cloning into '/var/lib/mock/f45-build-40107-768/root/chroot_tmpdir/scmroot/rust-apple-dmg'...
$ git fetch origin d9d4054d269dfd5a3acf2bf29ea83b50e827802e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-apple-dmg
 * [new ref]         d9d4054d269dfd5a3acf2bf29ea83b50e827802e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d9d4054 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild