$ git clone -n https://git.cclinux.org/stage/rpms/gcc-toolset-9.git /var/lib/mock/dist-circle8-build-21515-3944/root/chroot_tmpdir/scmroot/gcc-toolset-9
Cloning into '/var/lib/mock/dist-circle8-build-21515-3944/root/chroot_tmpdir/scmroot/gcc-toolset-9'...
$ git reset --hard db910af13ad565b439bfc6dca7fc6d060cf5ad4c
HEAD is now at db910af import gcc-toolset-9-9.0-4.el8