$ git clone -n https://src.fedoraproject.org/rpms/python-kombu.git /var/lib/mock/f40-build-2078901-49629/root/chroot_tmpdir/scmroot/python-kombu
Cloning into '/var/lib/mock/f40-build-2078901-49629/root/chroot_tmpdir/scmroot/python-kombu'...
$ git fetch origin e38b1e84cb96a3e950ae7cec5441989ebadc3d84:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-kombu
 * [new ref]         e38b1e84cb96a3e950ae7cec5441989ebadc3d84 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e38b1e8 kombu 5.3.4 (Fixes RHBZ#2248155)