$ git clone -n https://gitee.com/src-anolis-os/fftw.git /var/lib/mock/dist-an23-build-331595-69543/root/chroot_tmpdir/scmroot/fftw
Cloning into '/var/lib/mock/dist-an23-build-331595-69543/root/chroot_tmpdir/scmroot/fftw'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/fftw
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c92e071 update config.sub and config.guess for loongarch64