$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Test-NoWarnings.git /var/lib/mock/dist-oc9-build-71369-47551/root/chroot_tmpdir/scmroot/perl-Test-NoWarnings
Cloning into '/var/lib/mock/dist-oc9-build-71369-47551/root/chroot_tmpdir/scmroot/perl-Test-NoWarnings'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Test-NoWarnings
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ec6983 import perl-Test-NoWarnings-1.06-5.tl4