$ git clone -n https://gitee.com/sys0613/perl-File-Which.git /var/lib/mock/dist-an23-build-274520-64234/root/chroot_tmpdir/scmroot/perl-File-Which
Cloning into '/var/lib/mock/dist-an23-build-274520-64234/root/chroot_tmpdir/scmroot/perl-File-Which'...
$ git fetch origin 2d5be3e99f046ad8a0ab97e4a98b844b40b19362:KOJI_FETCH_HEAD
From https://gitee.com/sys0613/perl-File-Which
 * [new ref]         2d5be3e99f046ad8a0ab97e4a98b844b40b19362 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d5be3e spec: add sub doc package