$ git clone -n https://gitee.com/wenyuzifang/firebird.git /var/lib/mock/dist-an23-dde-build-445302-73224/root/chroot_tmpdir/scmroot/firebird
Cloning into '/var/lib/mock/dist-an23-dde-build-445302-73224/root/chroot_tmpdir/scmroot/firebird'...
$ git fetch origin 946edb00f7cbf097875179e60e24be73a3e4f5b6:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/firebird
 * [new ref]         946edb00f7cbf097875179e60e24be73a3e4f5b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 946edb0 Update code from upstream