$ git clone -n https://gitee.com/opencloudos-stream/R-testit /var/lib/mock/dist-ocs23-epol9-build-283606-27380/root/chroot_tmpdir/scmroot/R-testit
Cloning into '/var/lib/mock/dist-ocs23-epol9-build-283606-27380/root/chroot_tmpdir/scmroot/R-testit'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/R-testit
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b38e579 update