$ git clone -n https://gitee.com/opencloudos-stream/golang-github-ianlancetaylor-demangle.git /var/lib/mock/dist-oc9-epol-build-103177-66164/root/chroot_tmpdir/scmroot/golang-github-ianlancetaylor-demangle
Cloning into '/var/lib/mock/dist-oc9-epol-build-103177-66164/root/chroot_tmpdir/scmroot/golang-github-ianlancetaylor-demangle'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/golang-github-ianlancetaylor-demangle
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at afd1c2a update