$ git clone -n https://gitee.com/opencloudos-stream/perl-B-Debug.git /var/lib/mock/dist-ocs23-build-233473-19955/root/chroot_tmpdir/scmroot/perl-B-Debug
Cloning into '/var/lib/mock/dist-ocs23-build-233473-19955/root/chroot_tmpdir/scmroot/perl-B-Debug'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/perl-B-Debug
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 27fca3e Rebuilt for loongarch release