$ git clone -n https://gitee.com/opencloudos-stream/perl-Class-ISA.git /var/lib/mock/dist-oc9-epol-build-93376-59422/root/chroot_tmpdir/scmroot/perl-Class-ISA
Cloning into '/var/lib/mock/dist-oc9-epol-build-93376-59422/root/chroot_tmpdir/scmroot/perl-Class-ISA'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/perl-Class-ISA
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56a0d37 update