$ git clone -n https://gitee.com/src-opencloudos-rpms/distribution-gpg-keys.git /var/lib/mock/dist-oc9-build-40977-14591/root/chroot_tmpdir/scmroot/distribution-gpg-keys
Cloning into '/var/lib/mock/dist-oc9-build-40977-14591/root/chroot_tmpdir/scmroot/distribution-gpg-keys'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/distribution-gpg-keys
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ceafa6c import distribution-gpg-keys-1.78-3.tl4