$ git clone -n https://src.fedoraproject.org/rpms/python-googleapis-common-protos.git /var/lib/mock/f39-build-1698829-41185/root/chroot_tmpdir/scmroot/python-googleapis-common-protos
Cloning into '/var/lib/mock/f39-build-1698829-41185/root/chroot_tmpdir/scmroot/python-googleapis-common-protos'...
$ git fetch origin fc9ba23b6caa50d254eeb798ec86e05bcda45586:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-googleapis-common-protos
 * [new ref]         fc9ba23b6caa50d254eeb798ec86e05bcda45586 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc9ba23 Update packit config