$ git clone -n https://gitee.com/yan1hcdc/anaconda.git /var/lib/mock/dist-an23-build-444026-73188/root/chroot_tmpdir/scmroot/anaconda
Cloning into '/var/lib/mock/dist-an23-build-444026-73188/root/chroot_tmpdir/scmroot/anaconda'...
$ git fetch origin 26ef3b149f26ab94bcd59484a53b98f95144eacc:KOJI_FETCH_HEAD
From https://gitee.com/yan1hcdc/anaconda
 * [new ref]         26ef3b149f26ab94bcd59484a53b98f95144eacc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26ef3b1 add riscv64 support