$ git clone -n https://src.fedoraproject.org/rpms/rust-overload.git /var/lib/mock/f45-build-43605-804/root/chroot_tmpdir/scmroot/rust-overload
Cloning into '/var/lib/mock/f45-build-43605-804/root/chroot_tmpdir/scmroot/rust-overload'...
$ git fetch origin 4bc689751b4d72bd19f926f236d5414856b3d8f7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-overload
 * [new ref]         4bc689751b4d72bd19f926f236d5414856b3d8f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4bc6897 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild