$ git clone -n https://src.fedoraproject.org/rpms/rust-rd-agent.git /var/lib/mock/f45-build-44320-812/root/chroot_tmpdir/scmroot/rust-rd-agent
Cloning into '/var/lib/mock/f45-build-44320-812/root/chroot_tmpdir/scmroot/rust-rd-agent'...
$ git fetch origin e879cf5ed55589dc0d907882d004cd192df2aae9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rd-agent
 * [new ref]         e879cf5ed55589dc0d907882d004cd192df2aae9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e879cf5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild