$ git clone -n https://src.fedoraproject.org/rpms/python-commoncode.git /var/lib/mock/f42-build-side-1-3523546-46210/root/chroot_tmpdir/scmroot/python-commoncode
Cloning into '/var/lib/mock/f42-build-side-1-3523546-46210/root/chroot_tmpdir/scmroot/python-commoncode'...
$ git fetch origin b2046041ccf0bdc7ecd4590ecf221fce391696e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-commoncode
 * [new ref]         b2046041ccf0bdc7ecd4590ecf221fce391696e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b204604 Update to 32.2.1. Fixes rhbz#2280879.