$ whoami
root
$ git clone -n http://8.131.229.236/anolis-os/gcc-toolset-9-gdb /var/lib/mock/dist-el8-gcc-toolset-9-build-7719-706/root/chroot_tmpdir/scmroot/gcc-toolset-9-gdb
Cloning into '/var/lib/mock/dist-el8-gcc-toolset-9-build-7719-706/root/chroot_tmpdir/scmroot/gcc-toolset-9-gdb'...
$ git reset --hard origin/a8
HEAD is now at 4e542b3 import gcc-toolset-9-gdb-8.3-1.el8.src.rpm