$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Test-Warnings.git /var/lib/mock/dist-oc9-build-61923-16463/root/chroot_tmpdir/scmroot/perl-Test-Warnings
Cloning into '/var/lib/mock/dist-oc9-build-61923-16463/root/chroot_tmpdir/scmroot/perl-Test-Warnings'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Test-Warnings
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ebf31bf import perl-Test-Warnings-0.031-5.tl4