$ git clone -n https://src.fedoraproject.org/rpms/rpm-ostree.git /var/lib/mock/f33-build-559880-65760/root/chroot_tmpdir/scmroot/rpm-ostree
Cloning into '/var/lib/mock/f33-build-559880-65760/root/chroot_tmpdir/scmroot/rpm-ostree'...
$ git reset --hard 8adad70c2158a1f6f5658762408e55a190809641
HEAD is now at 8adad70 https://github.com/coreos/rpm-ostree/releases/tag/v2021.3