$ git clone -n https://gitee.com/ocs-upgrade/python-pbr.git /var/lib/mock/dist-ocs23-build-212406-15360/root/chroot_tmpdir/scmroot/python-pbr
Cloning into '/var/lib/mock/dist-ocs23-build-212406-15360/root/chroot_tmpdir/scmroot/python-pbr'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/ocs-upgrade/python-pbr
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2257ca Upgrade to version 6.0.0