$ git clone -n https://src.fedoraproject.org/rpms/python-kombu.git /var/lib/mock/f40-build-2676234-67853/root/chroot_tmpdir/scmroot/python-kombu
Cloning into '/var/lib/mock/f40-build-2676234-67853/root/chroot_tmpdir/scmroot/python-kombu'...
$ git fetch origin 289d43a11399054f8372e592f57e52ab82f52a19:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-kombu
 * [new ref]         289d43a11399054f8372e592f57e52ab82f52a19 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 289d43a kombu 5.3.5 (Fixes RHBZ#2258138)