$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc9-build-81878-56552/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc9-build-81878-56552/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin 3ad503f3e9e5ef2073abe43252b34ed8cb447067:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         3ad503f3e9e5ef2073abe43252b34ed8cb447067 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ad503f Add auto-patch changlog