$ git clone -n https://src.fedoraproject.org/rpms/rust-constant_time_eq.git /var/lib/mock/f37-build-side-31-rust-devel-105842-5623/root/chroot_tmpdir/scmroot/rust-constant_time_eq
Cloning into '/var/lib/mock/f37-build-side-31-rust-devel-105842-5623/root/chroot_tmpdir/scmroot/rust-constant_time_eq'...
$ git reset --hard d555597bc08a5aff61869bcea794856afc994d0d
HEAD is now at d555597 Update to version 0.2.4; Fixes RHBZ#2066007