$ git clone -n https://gitee.com/zhangwenlong01/bc.git /var/lib/mock/dist-an23.4-build-505011-74842/root/chroot_tmpdir/scmroot/bc
Cloning into '/var/lib/mock/dist-an23.4-build-505011-74842/root/chroot_tmpdir/scmroot/bc'...
$ git fetch origin 5f55572bb18a3e89407a98b736ef4bb57f0190b0:KOJI_FETCH_HEAD
From https://gitee.com/zhangwenlong01/bc
 * [new ref]         5f55572bb18a3e89407a98b736ef4bb57f0190b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f55572 rebuild for loongarch64