$ git clone -n https://gitee.com/wenyuzifang/firebird.git /var/lib/mock/dist-an23-dde-build-443957-73224/root/chroot_tmpdir/scmroot/firebird
Cloning into '/var/lib/mock/dist-an23-dde-build-443957-73224/root/chroot_tmpdir/scmroot/firebird'...
$ git fetch origin 0097843d58cb96cdf2c4deab472dc9b414448510:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/firebird
 * [new ref]         0097843d58cb96cdf2c4deab472dc9b414448510 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0097843 Update code from upstream