$ git clone -n https://src.fedoraproject.org/rpms/rust-wayland-client.git /var/lib/mock/f40-build-2170638-51028/root/chroot_tmpdir/scmroot/rust-wayland-client
Cloning into '/var/lib/mock/f40-build-2170638-51028/root/chroot_tmpdir/scmroot/rust-wayland-client'...
$ git fetch origin 846a59382640e206a4c4a1e43727ac0542aaeb33:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-wayland-client
 * [new ref]         846a59382640e206a4c4a1e43727ac0542aaeb33 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 846a593 Update to 0.31.1 (rhbz#2156601)