$ git clone -n https://gitee.com/opencloudos-stream/xrootd.git /var/lib/mock/dist-oc9-epol-build-249107-83775/root/chroot_tmpdir/scmroot/xrootd
Cloning into '/var/lib/mock/dist-oc9-epol-build-249107-83775/root/chroot_tmpdir/scmroot/xrootd'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/xrootd
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ccd6d6 !7 Rebuilt to support ceph 19.2.6 Merge pull request !7 from clareli/master