$ git clone -n https://gitee.com/wenyuzifang/python-pyfakefs.git /var/lib/mock/dist-an23-build-486577-74383/root/chroot_tmpdir/scmroot/python-pyfakefs
Cloning into '/var/lib/mock/dist-an23-build-486577-74383/root/chroot_tmpdir/scmroot/python-pyfakefs'...
$ git fetch origin 072bd73e0113f79c812bbf86f3f3672d0e22d2ad:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/python-pyfakefs
 * [new ref]         072bd73e0113f79c812bbf86f3f3672d0e22d2ad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 072bd73 Update code from upstream