$ git clone -n https://gitee.com/src-anolis-os/ghc.git /var/lib/mock/dist-an8.7-build-130134-46256/root/chroot_tmpdir/scmroot/ghc
Cloning into '/var/lib/mock/dist-an8.7-build-130134-46256/root/chroot_tmpdir/scmroot/ghc'...
$ git reset --hard origin/a8
HEAD is now at 91e644c import ghc-8.2.2-68.3.el8