$ git clone -n git+ssh://git@codeup.openanolis.cn/codeup/anolis-os/texlive.git /var/lib/mock/dist-an8.4-build-21625-10265/root/chroot_tmpdir/scmroot/texlive
Cloning into '/var/lib/mock/dist-an8.4-build-21625-10265/root/chroot_tmpdir/scmroot/texlive'...
$ git reset --hard origin/a8
Updating files:  81% (617/758)
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Updating files: 100% (758/758), done.
HEAD is now at bd82f91 update to texlive-20180414-20.el8.src.rpm