$ git clone -n https://git.cclinux.org/stage/rpms/gcc-toolset-9-systemtap /var/lib/mock/dist-circle8-build-13016-2840/root/chroot_tmpdir/scmroot/gcc-toolset-9-systemtap
Cloning into '/var/lib/mock/dist-circle8-build-13016-2840/root/chroot_tmpdir/scmroot/gcc-toolset-9-systemtap'...
warning: redirecting to https://git.cclinux.org/stage/rpms/gcc-toolset-9-systemtap.git/
$ git reset --hard ca9f2c38144c8f1d94bd88415367b6f01d4c4510
HEAD is now at ca9f2c3 import gcc-toolset-9-systemtap-4.1-4.el8