$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Digest.git /var/lib/mock/dist-oc9-build-59426-16463/root/chroot_tmpdir/scmroot/perl-Digest
Cloning into '/var/lib/mock/dist-oc9-build-59426-16463/root/chroot_tmpdir/scmroot/perl-Digest'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Digest
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26d09fb import perl-Digest-1.20-4.tl4