$ git clone -n https://gitee.com/opencloudos-stream/perl-bignum.git /var/lib/mock/dist-ocs23-build-43388-2059/root/chroot_tmpdir/scmroot/perl-bignum
Cloning into '/var/lib/mock/dist-ocs23-build-43388-2059/root/chroot_tmpdir/scmroot/perl-bignum'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/perl-bignum
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6814db5 !1 Remove perl(:MODULE_COMPAT) which will be generated by perl-generators >= 1.15 Merge pull request !1 from jackxjchen/master