$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Algorithm-Diff.git /var/lib/mock/dist-oc9-build-129517-77860/root/chroot_tmpdir/scmroot/perl-Algorithm-Diff
Cloning into '/var/lib/mock/dist-oc9-build-129517-77860/root/chroot_tmpdir/scmroot/perl-Algorithm-Diff'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Algorithm-Diff
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d3c2d5 import perl-Algorithm-Diff-1.201-7.tl4