$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Sys-MemInfo.git /var/lib/mock/dist-oc9-build-58388-16463/root/chroot_tmpdir/scmroot/perl-Sys-MemInfo
Cloning into '/var/lib/mock/dist-oc9-build-58388-16463/root/chroot_tmpdir/scmroot/perl-Sys-MemInfo'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Sys-MemInfo
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc3b939 import perl-Sys-MemInfo-0.99-5.tl4