$ git clone -n https://gitee.com/opencloudos-stream/polly.git /var/lib/mock/dist-oc9-epol-build-154445-79736/root/chroot_tmpdir/scmroot/polly
Cloning into '/var/lib/mock/dist-oc9-epol-build-154445-79736/root/chroot_tmpdir/scmroot/polly'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/polly
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5003d87 !4 Rebuilt for loongarch64 Merge pull request !4 from lwy605/master