$ git clone -n https://src.fedoraproject.org/rpms/rust-wayland-client.git /var/lib/mock/f42-build-side-1-3512320-46067/root/chroot_tmpdir/scmroot/rust-wayland-client
Cloning into '/var/lib/mock/f42-build-side-1-3512320-46067/root/chroot_tmpdir/scmroot/rust-wayland-client'...
$ git fetch origin 4d6b33106e6343ebc45565d6d9dc622f4534e806:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-wayland-client
 * [new ref]         4d6b33106e6343ebc45565d6d9dc622f4534e806 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d6b331 Update to version 0.31.8; Fixes RHBZ#2343244