$ git clone -n https://gitee.com/ocs-upgrade/perl-CPAN.git /var/lib/mock/dist-ocs23-build-284968-27555/root/chroot_tmpdir/scmroot/perl-CPAN
Cloning into '/var/lib/mock/dist-ocs23-build-284968-27555/root/chroot_tmpdir/scmroot/perl-CPAN'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/ocs-upgrade/perl-CPAN
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a33dfb5 Upgrade to version 2.37