$ git clone -n https://gitee.com/zhangwenlong01/libarrow.git /var/lib/mock/dist-an23-epao-build-427367-72996/root/chroot_tmpdir/scmroot/libarrow
Cloning into '/var/lib/mock/dist-an23-epao-build-427367-72996/root/chroot_tmpdir/scmroot/libarrow'...
$ git fetch origin 6c8c3f748bf98b7b868f719b444214423556c2cd:KOJI_FETCH_HEAD
From https://gitee.com/zhangwenlong01/libarrow
 * [new ref]         6c8c3f748bf98b7b868f719b444214423556c2cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c8c3f7 build for loongarch64