$ git clone -n https://gitee.com/src-opencloudos-rpms/firefox.git /var/lib/mock/dist-oc8-firefox-build-81875-56178/root/chroot_tmpdir/scmroot/firefox
Cloning into '/var/lib/mock/dist-oc8-firefox-build-81875-56178/root/chroot_tmpdir/scmroot/firefox'...
$ git fetch origin 5d684124c6650e1064918986f1ca1dfc5cbd903d:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/firefox
 * [new ref]         5d684124c6650e1064918986f1ca1dfc5cbd903d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d68412 Add auto-patch changlog