$ git clone -n https://src.fedoraproject.org/rpms/rust-tokio-tungstenite.git /var/lib/mock/f38-build-side-42-init-devel-1138495-30393/root/chroot_tmpdir/scmroot/rust-tokio-tungstenite
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1138495-30393/root/chroot_tmpdir/scmroot/rust-tokio-tungstenite'...
$ git fetch origin 6aab12b1f566e4c6f33bdb6dfc7c0232e7221a1b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tokio-tungstenite
 * [new ref]         6aab12b1f566e4c6f33bdb6dfc7c0232e7221a1b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6aab12b Update to version 0.18.0; Fixes RHBZ#2149160