$ git clone -n https://src.fedoraproject.org/rpms/python-trio-websocket.git /var/lib/mock/f40-build-2142743-50851/root/chroot_tmpdir/scmroot/python-trio-websocket
Cloning into '/var/lib/mock/f40-build-2142743-50851/root/chroot_tmpdir/scmroot/python-trio-websocket'...
$ git fetch origin b0938d8f6ce85d6bbebb5d3e515811fcdfd10c35:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-trio-websocket
 * [new ref]         b0938d8f6ce85d6bbebb5d3e515811fcdfd10c35 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b0938d8 Remove buildinfo file from -doc subpackage