$ git clone -n https://src.fedoraproject.org/rpms/rust-ref-cast-impl.git /var/lib/mock/f37-build-side-31-rust-devel-136348-8291/root/chroot_tmpdir/scmroot/rust-ref-cast-impl
Cloning into '/var/lib/mock/f37-build-side-31-rust-devel-136348-8291/root/chroot_tmpdir/scmroot/rust-ref-cast-impl'...
$ git reset --hard d3270d1c5f16fe84c8ec7d3995e315865a6abf3a
HEAD is now at d3270d1 Update to version 1.0.9; Fixes RHBZ#2114939