$ git clone -n https://gitee.com/opencloudos-stream/perl-IO-Socket-Multicast.git /var/lib/mock/dist-oc9-epol-build-83946-57260/root/chroot_tmpdir/scmroot/perl-IO-Socket-Multicast
Cloning into '/var/lib/mock/dist-oc9-epol-build-83946-57260/root/chroot_tmpdir/scmroot/perl-IO-Socket-Multicast'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/perl-IO-Socket-Multicast
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd7f34a package init