$ git clone -n https://src.fedoraproject.org/rpms/rust-new_debug_unreachable.git /var/lib/mock/f45-build-43348-802/root/chroot_tmpdir/scmroot/rust-new_debug_unreachable
Cloning into '/var/lib/mock/f45-build-43348-802/root/chroot_tmpdir/scmroot/rust-new_debug_unreachable'...
$ git fetch origin 30e1f4bb5afcecb5049653cfea78b2217153db42:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-new_debug_unreachable
 * [new ref]         30e1f4bb5afcecb5049653cfea78b2217153db42 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 30e1f4b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild