$ git clone -n https://src.fedoraproject.org/rpms/rust-wayland-client.git /var/lib/mock/f42-build-side-1-3573347-46766/root/chroot_tmpdir/scmroot/rust-wayland-client
Cloning into '/var/lib/mock/f42-build-side-1-3573347-46766/root/chroot_tmpdir/scmroot/rust-wayland-client'...
$ git fetch origin 8c439dee58d20156a09f89324b5f1bd1ef44e40d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-wayland-client
 * [new ref]         8c439dee58d20156a09f89324b5f1bd1ef44e40d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c439de Update to version 0.31.10; Fixes RHBZ#2362774