$ git clone -n https://gitee.com/src-opencloudos-rpms/perl.git /var/lib/mock/dist-oc9-build-121306-71615/root/chroot_tmpdir/scmroot/perl
Cloning into '/var/lib/mock/dist-oc9-build-121306-71615/root/chroot_tmpdir/scmroot/perl'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 35ce914 import perl-5.36.0-12.tl4