$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-ExtUtils-MakeMaker.git /var/lib/mock/dist-oc9-build-71159-47524/root/chroot_tmpdir/scmroot/perl-ExtUtils-MakeMaker
Cloning into '/var/lib/mock/dist-oc9-build-71159-47524/root/chroot_tmpdir/scmroot/perl-ExtUtils-MakeMaker'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-ExtUtils-MakeMaker
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 421a6b7 import perl-ExtUtils-MakeMaker-7.70-2.tl4