$ git clone -n https://gitee.com/opencloudos-stream/R-rJava.git /var/lib/mock/dist-oc9-epol-build-212782-80761/root/chroot_tmpdir/scmroot/R-rJava
Cloning into '/var/lib/mock/dist-oc9-epol-build-212782-80761/root/chroot_tmpdir/scmroot/R-rJava'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/R-rJava
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1cafe92 !2 add support for loongarch64 Merge pull request !2 from dpd/master