$ git clone -n https://gitee.com/src-opencloudos-rpms/osbuild-composer /var/lib/mock/dist-oc9-build-57316-15532/root/chroot_tmpdir/scmroot/osbuild-composer
Cloning into '/var/lib/mock/dist-oc9-build-57316-15532/root/chroot_tmpdir/scmroot/osbuild-composer'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/osbuild-composer
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52e2e10 !4 fix build error on oc9 Merge pull request !4 from Fanjun Kong/oc9