$ whoami
root
$ git clone -n http://8.131.229.236/anolis-os/libgexiv2 /var/lib/mock/dist-el8-build-5140-34/root/chroot_tmpdir/scmroot/libgexiv2
Cloning into '/var/lib/mock/dist-el8-build-5140-34/root/chroot_tmpdir/scmroot/libgexiv2'...
$ git reset --hard origin/a8
HEAD is now at d4b6be4 import libgexiv2-0.10.8-4.el8.src.rpm