$ git clone -n https://src.fedoraproject.org/rpms/python-docker.git /var/lib/mock/f45-build-30433-644/root/chroot_tmpdir/scmroot/python-docker
Cloning into '/var/lib/mock/f45-build-30433-644/root/chroot_tmpdir/scmroot/python-docker'...
$ git fetch origin 0008cf6fdbe8ff6d097678d4cd012289b97da0bd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-docker
 * [new ref]         0008cf6fdbe8ff6d097678d4cd012289b97da0bd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0008cf6 Update to 7.2.0 upstream release