$ git clone -n https://gitee.com/yan1hcdc/perl-Sys-CPU.git /var/lib/mock/dist-an23-build-443424-73188/root/chroot_tmpdir/scmroot/perl-Sys-CPU
Cloning into '/var/lib/mock/dist-an23-build-443424-73188/root/chroot_tmpdir/scmroot/perl-Sys-CPU'...
$ git fetch origin 4e076e9a3b4f09f167b8d712447b0363fcd0e0da:KOJI_FETCH_HEAD
From https://gitee.com/yan1hcdc/perl-Sys-CPU
 * [new ref]         4e076e9a3b4f09f167b8d712447b0363fcd0e0da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4e076e9 add support for riscv build