$ git clone -n https://src.fedoraproject.org/rpms/libcxxabi.git /var/lib/mock/f33-build-124259-39658/root/chroot_tmpdir/scmroot/libcxxabi
Cloning into '/var/lib/mock/f33-build-124259-39658/root/chroot_tmpdir/scmroot/libcxxabi'...
$ git reset --hard ebd4b5069102cbdbc1c64cdbb7cb0b6053294024
HEAD is now at ebd4b50 10.0.0 rc6