$ git clone -n https://gitee.com/opencloudos-stream/ghc-erf.git /var/lib/mock/dist-oc9-epol-build-141280-79713/root/chroot_tmpdir/scmroot/ghc-erf
Cloning into '/var/lib/mock/dist-oc9-epol-build-141280-79713/root/chroot_tmpdir/scmroot/ghc-erf'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ghc-erf
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 857c49c !1 Rebuilt for loongarch64 Merge pull request !1 from brucezhang/master