$ git clone -n https://gitee.com/wenyuzifang/fftw.git /var/lib/mock/dist-an23-build-469659-74027/root/chroot_tmpdir/scmroot/fftw
Cloning into '/var/lib/mock/dist-an23-build-469659-74027/root/chroot_tmpdir/scmroot/fftw'...
$ git fetch origin f83388bcc75e7fd373a2df43d2ab677bedac83fa:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/fftw
 * [new ref]         f83388bcc75e7fd373a2df43d2ab677bedac83fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f83388b Update code from upstream