$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Digest-SHA1.git /var/lib/mock/dist-oc9-build-43553-14591/root/chroot_tmpdir/scmroot/perl-Digest-SHA1
Cloning into '/var/lib/mock/dist-oc9-build-43553-14591/root/chroot_tmpdir/scmroot/perl-Digest-SHA1'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Digest-SHA1
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d8483f0 import perl-Digest-SHA1-2.13-3.tl4