$ git clone -n https://gitee.com/opencloudos-stream/perl-Crypt-Random-Source.git /var/lib/mock/dist-oc9-epol-build-93460-59435/root/chroot_tmpdir/scmroot/perl-Crypt-Random-Source
Cloning into '/var/lib/mock/dist-oc9-epol-build-93460-59435/root/chroot_tmpdir/scmroot/perl-Crypt-Random-Source'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/perl-Crypt-Random-Source
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f692fc update