$ git clone -n https://src.fedoraproject.org/rpms/rust-config.git /var/lib/mock/f45-build-40905-777/root/chroot_tmpdir/scmroot/rust-config
Cloning into '/var/lib/mock/f45-build-40905-777/root/chroot_tmpdir/scmroot/rust-config'...
$ git fetch origin 37114d49e40130140f1f7edca179df08a2dfd9fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-config
 * [new ref]         37114d49e40130140f1f7edca179df08a2dfd9fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37114d4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild