$ git clone -n https://src.fedoraproject.org/rpms/python-kombu.git /var/lib/mock/f39-build-1427194-31623/root/chroot_tmpdir/scmroot/python-kombu
Cloning into '/var/lib/mock/f39-build-1427194-31623/root/chroot_tmpdir/scmroot/python-kombu'...
$ git fetch origin 5d32b6dd6be0a5fc89871f9fb513443ddfe4fb8e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-kombu
 * [new ref]         5d32b6dd6be0a5fc89871f9fb513443ddfe4fb8e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d32b6d kombu 5.3.1 (Fixes RHBZ#2215327)