$ git clone -n http://8.131.229.236/anolis-os/eigen3 /var/lib/mock/dist-el8-build-8455-1274/root/chroot_tmpdir/scmroot/eigen3
Cloning into '/var/lib/mock/dist-el8-build-8455-1274/root/chroot_tmpdir/scmroot/eigen3'...
$ git reset --hard origin/a8
HEAD is now at 1945208 import eigen3-3.3.4-6.el8.src.rpm