$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Crypt-OpenSSL-Bignum.git /var/lib/mock/dist-oc9-build-71085-47516/root/chroot_tmpdir/scmroot/perl-Crypt-OpenSSL-Bignum
Cloning into '/var/lib/mock/dist-oc9-build-71085-47516/root/chroot_tmpdir/scmroot/perl-Crypt-OpenSSL-Bignum'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Crypt-OpenSSL-Bignum
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 23f65e9 import perl-Crypt-OpenSSL-Bignum-0.09-4.tl4